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HP 84125C, User Manual

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HP 84125C User Manual Download Page 70

3.

Press

4

SP

AN

5

10

4

MHz

5 ,

or

a

frequency

span

that

will

make

a

calibrated

measurement.

4.

Press

4

MKR

5 ,

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

SIG

TRK

ON

OFF

with

OFF

underlined.

5.

Press

4

AMPLITUDE

5 ,

NNNNNNNNNNNNNNNNNNNNNNN

Ref

Lvl

and

adjust

the

reference

level

to

bring

the

signal

near

the

top

of

the

display

.

6.

Press

4

MODULE

5 ,

NNNNNNNNNNNNNNNNNNNNNNNNNNNNN

USER

KEYS

,

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

SELECT

LINEAR

to

select

a

linear

amplitude

scale

.

Note

Amplitude

correction

is

turned

o

in

Linear

mode

.

The

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

MARKER

dB V/m

softkey

must

be

used

to

make

a

dBV/m

reading

at

a

single

point.

Notice

that

the

limit

line

is

removed

when

in

Linear

mode

.

In

Linear

mode

,

the

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

MKR

LIM

ON

OFF

softkey

replaces

the

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

LIM

LINE

ON

OFF

softkey

.

When

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

MKR

LIM

ON

OFF

is

ON,

a

limit

fail

message

will

be

displayed

if

the

signal

(using

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

MARKER

dB V/m

or

any

of

the

corresponding

peak

search

keys)

exceeds

the

limit

set.

7.

Press

4

AMPLITUDE

5 ,

NNNNNNNNNNNNNNNNNNNNNNN

Ref

Lvl

and

adjust

the

reference

level

to

bring

the

signal

near

the

top

of

the

display

.

8.

Press

4

BW

5 ,

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

VIDEO

BW

AUTO

MAN

with

MAN

underlined.

Use

the

down

arrow

key

to

reduce

the

video

bandwidth.

Continue

to

reduce

the

video

bandwidth

until

the

trace

becomes

smoothed

and

ceases

to

change

.

A

veraging

occurs

when

the

video

bandwidth

is

smaller

than

the

lowest

pulse

repetition

frequency

(PRF)

of

the

signal

being

measured.

Note

If

the

signal

of

interest

is

greater

than

2.9

GHz,

perform

a

preselector

peak

by

pressing,

4

AMPLITUDE

5 ,

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

MORE

1

OF

3

,

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

MORE

2

0F

3

,

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

PRESEL

AUTO

PK

.

9.

Press

4

MODULE

5 ,

NNNNNNNNNNNNNNNNNNNNNNNNNNNNN

USER

KEYS

,

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

MARKER

dB V/m

to

activate

the

marker

.

10.

Press

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

HIGHEST

PEAK

,

or

any

of

the

other

marker

softkeys

,

to

place

the

marker

on

the

emission.

If

the

marker

value

exceeds

the

limit

then

the

message

,

\LIMIT

F

AILED"

will

appear

above

the

Corrected

Linear

Marker

V

alue

.

11.

Press

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

ADD

TO

MKR

LIST

,

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

SAVE

MKR

#2

to

add

the

signal

to

the

marker

list.

Tip

T

o

view

the

signals

in

the

marker

list,

press

NNNNNNNNNNNNNNNNNNNNNNNNNNNNN

Main

Menu

,

NNNNNNNNNNNNNN

MORE

,

N

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

VIEW

MKR

LIST

.

12.

Press

NNNNNNNNNNNNNNNNNNNNNNNNNNNNN

Main

Menu

,

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

SELECT

LOG

to

return

to

a

logarithmic

amplitude

scale

.

Making

Measurements

6-5

Summary of Contents for 84125C

Page 1: ...ble You will find any other available product information on the Agilent Test Measurement website www tm agilent com HP References in this Manual This manual may contain references to HP or Hewlett Packard Please note that Hewlett Packard s former test and measurement semiconductor products and chemical analysis businesses are now part of Agilent Technologies We have made no changes to this manual...

Page 2: ...HP 84125C User s Guide Microwave EMI Measurement Test System ABCDE HP Part No 84125 90010 Printed in USA February 1999 ...

Page 3: ...this material Restricted Rights Legend Use duplication or disclosure by the U S Government is subject to restrictions as set forth in subparagraph c 1 ii of the Rights of Technical Data and Computer Software clause at DFARS 252 227 7013 for DOD agencies and subparagraphs c 1 and c 2 of the Commercial Computer Software Restricted Rights clause at FAR 52 227 19 for other agencies c Copyright Hewlett...

Page 4: ...o return the product to Buyer However Buyer shall pay all shipping charges duties and taxes for products returned to Hewlett Packard from another country Hewlett Packard warrants that its software and rmware designated by Hewlett Packard for use with an instrument will execute its programming instructions when properly installed on that instrument Hewlett Packard does not warrant that the operatio...

Page 5: ...maintain the instrument in a safe condition Safety Notes The following safety notes are used throughout this manual Familiarize yourself with each of the notes and its meaning before operating this instrument WARNING Warning denotes a hazard It calls attention to a procedure which if not correctly performed or adhered to could result in injury or loss of life Do not proceed beyond a warning note u...

Page 6: ...rd supplied with this instrument Failure to ensure adequate earth grounding by not using this cord may cause instrument damage Only clean the instrument cabinet using a damp cloth L The instruction documentation symbol The product is marked with this symbol when it is necessary for the user to refer to the instructions in the documentation CE The CE mark is a registered trademark of the European C...

Page 7: ......

Page 8: ... 3 4 Attaching the Power Module and Power Cords 3 6 Installing the Accessories and Test Set in the System 3 6 Connecting the RF Cable Assembly to the Spectrum Analyzer 3 7 Connecting the DC Ampli ers to the RF Cable Assembly 3 9 System Functional Tests 3 10 Test Set Veri cation Description 3 10 Procedure 3 12 Displayed Average Noise Level DANL Description 3 15 Part 1 1 to 18 GHz 3 15 Part 2 18 to ...

Page 9: ...NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LIM LINE ON OFF 5 7 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN MARKER dB V m 5 7 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN MAX HOLD ON OFF 5 8 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN MKR LIM ON OFF 5 8 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NEXT PEAK 5 8 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NEXT LT PEAK 5 9 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN...

Page 10: ... Veri cation 7 6 Setting Up AT GPIB TNT for Windows 95 7 7 Software Installation 7 7 Hardware Con guration 7 7 Hardware Installation 7 8 Hardware Veri cation 7 8 Setting Up AT GPIB TNT for Windows NT 4 0 7 8 Software Installation 7 8 Hardware Setup and Installation 7 8 Software Setup 7 9 Hardware Veri cation AT GPIB TNT 7 9 Installing the HP 84125C Download Utility on Your Personal Computer 7 10 D...

Page 11: ...eable Parts 8 2 Returning the HP 84125C System for Calibration or Service 8 3 Packaging the HP 84125C System for Shipment 8 3 Hewlett Packard Sales and Service O ces 8 4 A Amplitude Accuracy Spectrum Analyzer Uncertainties A 1 HP 84125C Test Set Uncertainties A 2 Index Contents 4 ...

Page 12: ...3 8 DANL Measurement Setup 18 to 40 GHz 3 19 4 1 Test Set Diagram 4 1 4 2 1 to 18 GHz Test Set Con guration top view 4 2 4 3 18 to 26 5 GHz Test Set Con guration side view 4 4 4 4 26 5 to 40 GHz Test Set Con guration side view 4 6 5 1 DLP softkey menu 5 2 8 1 Component Location Diagram 8 3 Tables 3 1 HP 84125C System Accessories 3 2 3 2 Recommended Test Equipment and Accessories 3 11 3 3 Hardware ...

Page 13: ......

Page 14: ... DC power cables for the ampli ers Each system is calibrated by Hewlett Packard before shipment The calibration data consists of ampli er gain cable loss lter response and antenna factors The data is then stored into data correction tables which are loaded into the spectrum analyzer memory for easy recall during each measurement band The calibration data is also stored on a 3 5 inch oppy disk duri...

Page 15: ...es At frequencies equal to or above 30 MHz measurements may be performed at a distance other than what is speci ed provided measurements are not made in the near eld and it can be demonstrated that the signal levels needed to be measured at the distance employed can be detected by the measuring equipment Measurements shall not be performed at a distance greater than 30 meters unless it can be furt...

Page 16: ...s not veri ed on a continuing basis Typical Performance is non warranted but indicates performance which most units will exhibit Frequency Range HP 84125C 1 to 40 GHz Spectrum Analyzer Displayed Average Noise Level Measured at test set input with 1 MHz RBW 1 Speci cation Typical 1 to 18 GHz 6 dB V 03 dB V 18 to 26 5 GHz 6 dB V 03 dB V 26 5 to 40 GHz 9 dB V 0 dB V 1 For use with the through cable o...

Page 17: ...er Speci cations and Characteristics To guarantee the performance of the HP 84125C system the HP 8564E spectrum analyzer must be operated under the following conditions Five minute warmup in ambient conditions Auto coupled controls Digital trace display IF ADJ ON REF LVL CAL adjusted 1ST LO OUTPUT terminated in 50 ohms Two year calibration cycle Environmental requirements met Note REF LVL CAL uses...

Page 18: ...ic 1 to 18 GHz HP 11966E 2 8 to 1 0 18 to 26 5 GHz p n 84125 80008 1 4 to 1 0 26 5 to 40 GHz p n 84125 80001 1 4 to 1 0 Third Order Intercept characteristic 50 dB V Weight Test Set1 10 75 lb 2 23 7 kg HP 84125C System3 150 lb 330 8 kg 1 The weight includes the 1 to 18 GHz antenna horn 2 For an HP 84125C with either the 18 to 26 5 GHz antenna horn or the 26 5 to 40 GHz antenna horn installed the te...

Page 19: ...Figure 2 1 HP 84125C System Dimensions 2 4 Speci cations and Characteristics ...

Page 20: ...25C system are the actual eld strength of the emission in dB V m corrected for all system gains and losses including the antenna transducer factors Figure 2 2 Typical Sensitivity from 1 to 18 GHz Figure 2 3 Typical Sensitivity from 18 to 26 5 GHz Speci cations and Characteristics 2 5 ...

Page 21: ...system has the proper correction data loaded for the selected hardware con guration 5 The measurement is made with the spectrum analyzer in Linear Scale mode with a resolution bandwidth RBW of 1 MHz 6 While the measurement is made the spectrum analyzer reference level is kept at 56 dB V m when using the 1 to 18 GHz antenna or 48 dB V m when using the 18 to 26 5 GHz antenna 7 While the measurement ...

Page 22: ...ccuracy typical 1 0 to 2 9 GHz 6 2 dB 2 75 to 6 46 GHz 6 4 dB 6 46 to13 2 GHz 6 5 dB 13 2 18 0 GHz 6 8 dB 18 0 to 22 0 GHz 5 4 dB 22 0 to 26 5 GHz 5 6 dB 26 5 to 40 GHz 5 4 dB Speci cations and Characteristics 2 7 ...

Page 23: ...Declaration of Conformity Figure 2 5 Declaration of Conformity 2 8 Speci cations and Characteristics ...

Page 24: ...o you in three shipping containers Inspect the shipping containers for damage Use Table 3 1 to verify that the contents are complete It is important that you retain the shipping containers for returning the system in one year for recalibration See Returning the HP 84125C System for Calibration or Service in Chapter 8 for more information System Setup and Functional Tests 3 1 ...

Page 25: ...623 8710 1622 8710 1765 84300 80037 84300 80038 84300 80039 84125 80008 84125 80001 HP 92199E 84125 20043 84125 20044 1250 1159 Includes EMCO 3160 09 manual Includes EMCO 3160 10 manual Adapter is attached to W3 84125 20043 and should remain in this con guration Double Ridged Horn Antenna 1 to 18 GHz HP 11966E Includes EMCO 3115 HP 11966E manual Power Supplies HP 87421A Two 612VDC 25W Power Cords ...

Page 26: ...stem Fuse 5 A 250 V supplied in fuse holder Adapter Type N m to BNC f 1250 0780 Adapter SMA m to BNC f 1250 1200 Adapter K f to 2 4 mm f 1250 2187 Adapter 2 4 mm f to 2 4 mm f 1250 2188 Termination 50 SMA m 1810 0118 Test Set Box smallest carton Test Set Through Line Cable 2 92 k m to 2 4 m HP 84125C Utility Disk 84125 20019 84125 20042 N A Includes ampli ers and appropriate cabling Contains the D...

Page 27: ...ers that is wheels and the cart handle to the cart as shown in the HP 1182A Testmobile Instrument Cart and Accessories Operating Guide Installing the Spectrum Analyzer Refer to Figure 3 1 to assist you with the following procedure 1 Remove the spectrum analyzer from the medium sized carton 2 Remove the packet of hardware from the top shelf of the cart The hardware will be used to assemble the syst...

Page 28: ...he front of the analyzer into the bracket so that the front lower bumpers t behind the front tabs of the bracket 4 Position the analyzer clamps as shown in Figure 3 2 and loosely attach with four 4 0 mm X 16 mm screws 5 Align the front edge of the clamp with the front edge of the bracket then tighten the hold down screws System Setup and Functional Tests 3 5 ...

Page 29: ...efer to Chapter 9 of the HP 8560 E Series Spectrum Analyzer User s Guide for complete instructions Installing the Accessories and Test Set in the System 1 Open the drawer of the cart and remove all of the contents except the foam ller Position the foam ller at the back of the drawer 2 Remove the shipping foam with the accessories from the accessory carton and place it in the front of the drawer Th...

Page 30: ...of the Spectrum Analyzer 1 Use a 15 torx driver and two 4 0 mm X 12 0 mm torx screws to attach the strain relief support bracket to the spectrum analyzer mounting bracket Notice that the strain relief bracket has four holes in the bottom surface Use the two holes closest to the strain relief System Setup and Functional Tests 3 7 ...

Page 31: ...rx driver and two 3 5 mm X 16 0 mm screws to attach the bottom section to the strain relief bracket Tighten the screws just enough to hold the bottom strain relief against the bracket surface 4 Use a 10 torx driver and two 3 0 mm X 14 0 mm screws to attach the top section of the strain relief to the bottom section of the strain relief Tighten the screws to properly secure the RF cable CAUTION Be s...

Page 32: ... the shelf using four 4 0 mm screws and four cable clamps The loop should be large enough that normal cable exure will not cause the DC cables to rub the shelf edge Any excess cable length should be routed above the two ampli er power supplies mounted on the bottom of the shelf 2 Connect the two DC ampli er cables to the two power supplies 3 Con gure the test set with the required lters antenna an...

Page 33: ...est set see Figure 3 5 The synthesized sweeper power level is adjusted for a 065 dBm signal of the spectrum analyzer display The power level is then recorded The test set is then connected to the input of the spectrum analyzer with the correction factors turned o The spectrum analyzer reference level must be changed to account for the gain of the ampli ers in the test set The output of the synthes...

Page 34: ...izes those hardware con gurations See Figure 3 5 and Figure 3 6 for hardware locations Table 3 3 Hardware Con gurations Con guration Input Cable Filter or through line Ampli er Input Cable Test Frequency GHz Band 0 W3 W9 W1 W2 1 18 Band 1 W3 84300 80037 W1 W2 1 5 18 Band 2 W3 84300 80038 W1 W2 3 5 18 Band 3 W3 84300 80039 W1 W2 8 25 18 Band 4 W4 none W2 18 26 5 Band 5 W4 none W2 26 5 40 HP 84125C ...

Page 35: ...would need to be performed to ensure accurate measurements Table 3 4 Correction Data Files File Name Frequency Range GHz Antenna Correction Factors e3115 txt 1 to 18 e3160 09 txt 18 to 26 5 e3160 10 txt 26 5 to 40 Test Set Gain lter 0 txt 1 to 18 Band 0 lter 1 txt 1 5 to 18 Band 1 lter 2 txt 3 5 to 18 Band 2 lter 3 txt 8 25 to 18 Band 3 lter 4 txt 18 to 26 5 Band 4 lter 5 txt 26 5 to 40 Band 5 Pro...

Page 36: ...EF LVL 055 4dBm5 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN ATTEN AUTO MAN 10 4dB5 d 4BW5 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN VIDEO BW AUTO MAN 30 4kHz5 6 For frequencies above 2 9 GHz only a 4PEAK SEARCH5 b 4AMPLITUDE5 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN MORE 1 OF 3 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN MORE 2 OF 3 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN PRESEL AUTO PK Wait...

Page 37: ... erence between 065 dBm and the level recorded in step 13 Record the measured test set gain in Table 3 5 15 Determine the factory test set gain correction factor for the con guration band selected by performing the following a Press 4MODULE5 NNNNNNNNNNNNNNNNNNNNNNNNNNNNN USER KEYS NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN HP84125C Config b Select one of the six available con gurations see Co...

Page 38: ...m 1 to 40 GHz can be tested However you must ensure that the proper correction factors are used to calculate the deviation Refer to Table 3 4 Displayed Average Noise Level DANL Description This test measures the displayed average noise level of the HP 84125C microwave EMI measurement test system The test set is connected to the input of the spectrum analyzer The DLP is used to set up the initial s...

Page 39: ...is test and the antenna cable is re routed to a test port A 50 ohm termination is attached to the test port J1 Note Once the downloadable program DLP is loaded the antenna correction factors can not be deactivated independently Therefore antenna correction factors must be used to calculate the correct displayed average noise level Equipment Required Table 3 6 Recommended Test Equipment and Accesso...

Page 40: ...NNNNNNNNNNNNNNNNN HP84125C Config NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 1GHz to 18GHz b Ensure that the test set hardware is correct for the con guration selected There are di erent correction factors for each hardware con guration Refer to Chapter 4 for proper test set hardware con guration c Press NNNNNNNNNNNNNN MORE NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LIM LINE ON OFF to tu...

Page 41: ...g the following a Insert the 3 5 inch oppy disk provided with the HP 84125C system into a personal computer PC b Open Windows File Manager select the oppy disk drive for example drive A and double click on e3115 txt c Scroll down the list of frequencies and correction factors until you nd 9 5 xx x Where xx x is the correction factor at 9 5 GHz For example 9 5 39 8 d Record the antenna correction f...

Page 42: ...FIG NNNNNNNNNNNNNN More NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 18GHz to 26 5GHz b Ensure that the test set hardware is correct for the con guration selected There are di erent correction factors for each hardware con guration Refer to Chapter 4 for proper test set hardware con guration c Press NNNNNNNNNNNNNN MORE NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LIM LINE ON OFF to ...

Page 43: ...r the two high frequency horn antennas the 18 to 26 5 GHz and the 26 5 to 40 GHz antennas are very at Therefore this test uses a single antenna correction factor one for each high frequency band to calculate the displayed average noise level If the displayed average noise level is close to or above the limit you can measure it at speci c frequencies using the exact antenna correction factor as lis...

Page 44: ...ine Amplitude dB V Antenna Correction Factor dB Calculated DANL dB V Limit dB V 1 to 18 1 6 18 to 26 5 40 3 6 26 5 to 40 43 5 9 1 The antenna correction factor is determined in Part 1 step 6 of the Displayed Average Noise Level Test System Setup and Functional Tests 3 21 ...

Page 45: ......

Page 46: ...ejection at the fundamental frequency Measurement of harmonics above 18 GHz do not require the use of a high pass lter the 18 to 26 5 GHz and 26 5 to 40 GHz waveguide horn antennas serve as high pass lters Figure 4 1 shows the possible antenna and lter con gurations available Figure 4 1 Test Set Diagram 1 to 18 GHz Con guration Note If an antenna is already installed you may need to remove the ant...

Page 47: ... hex nut supplied in the accessories box to attach the antenna See Figure 4 2 below Figure 4 2 1 to 18 GHz Test Set Con guration top view 2 Loosely install the Type N connection of the W3 semirigid cable to the antenna The cable will have an SMA m to m adapter installed on one end 3 Select one of the three lters or the through cable and attach it to the SMA m to m adapter on the end of the W3 semi...

Page 48: ... need to use a 1 4 inch open end wrench to hold the connector on the through cable while tightening the mating connector Description Part Number 1 5 GHz High Pass Filter 84300 80037 3 5 GHz High Pass Filter 84300 80038 8 25 GHz High Pass Filter 84300 80039 Through Cable 84125 20019 4 Using the W2 semirigid cable connect the lter or through cable to J1 5 Be sure to torque all connectors to 8 inch p...

Page 49: ...ten connectors keeping all connections loose until the last step 1 Remove the antenna clamp from the front of the antenna mounting plate using the Torx 10 screwdriver supplied See Figure 4 3 below Figure 4 3 18 to 26 5 GHz Test Set Con guration side view 2 Position the antenna in the larger of the two slots of the antenna clamp placing the antenna clamp between the antenna horn and the waveguide a...

Page 50: ...4 Select the W4 semirigid cable and install it between the antenna output and the J1 connector Verify that the 2 92 mm K connector is attached to the antenna and the 2 4 mm connector the 2 4 mm end has a loose nut is attached to J1 5 Be sure to torque all connectors to 8 inch pounds using the 5 16 inch torque wrench provided 8710 1765 6 Tighten the antenna clamp screws using the Torx 10 screwdrive...

Page 51: ...en connectors keeping all connections loose until the last step 1 Remove the antenna clamp from the front of the antenna mounting plate using the Torx 10 screwdriver supplied See Figure 4 4 below Figure 4 4 26 5 to 40 GHz Test Set Con guration side view 2 Position the antenna in the smaller of the two slots of the antenna clamp placing the antenna clamp between the antenna horn and the waveguide a...

Page 52: ...dures to describe the connection ends of the semirigid cables lters and adapters supplied with this system Follow these recommendations for optimum connection technique Clean and inspect visually and mechanically all connectors cables and lters Align connectors carefully Look for at physical contact at all points on the mating plane surfaces Make a gentle preliminary connection When you make a con...

Page 53: ... lters in the foam lined storage tray Never store the cables or lters loose in a box in a desk or in a bench drawer This is the most common cause of connector damage during storage Keep connectors clean Do not touch mating plane surfaces Natural skin oils and microscopic particles of dirt are easily transferred to a connector interface and are very di cult to remove Do not set connectors contact e...

Page 54: ...our equipment under test EUT while ltering out the fundamental frequencies Correction data is used to sum out gains losses due to the antenna cables ampli ers and lters In the Log mode the values displayed by the HP 84125C system are the actual eld strength of the emission in dB V m corrected for all system gains and losses including the antenna transducers factors In the Linear mode only the mark...

Page 55: ...DLP Softkey Menu Figure 5 1 DLP softkey menu 5 2 System Interface ...

Page 56: ...nuation 20 dB Resolution bandwidth RBW 1 MHz Video bandwidth VBW 3 MHz Amplitude Corrections AmpCor On Reference level o set speci c for each con guration band x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x 1GHz to 18GHz Softkey that loads the correction data and parameters for the 1 to 18 test set con guration This includes the corresponding test set amplitude correct...

Page 57: ...GHz high pass lter ampli ers and cables are summed together antenna correction data and appropriate spectrum analyzer settings for making an EMI measurement Note The NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 3 5GHz to 18GHz softkey depends on the test set hardware being properly con gured That is the test set must be con gured in the 3 5 to 18 GHz con guration with the through cable and ante...

Page 58: ...x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x 26 5 GHz to 40GHz Softkey that loads the correction data and parameters for the 26 5 to 40 GHz test set con guration This includes the corresponding test set amplitude correction data that is ampli ers and cables are summed together antenna correction data and appropriate spectrum analyzer settings for making an EMI measuremen...

Page 59: ...Softkey that copies the graticule trace limit line labels and displayed marker that is the marker value displayed when the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN MARKER dB V m key is pressed to an external printer Key Path 4MODULE5 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 USER KEYS NNNNNNNNNNNNNNNNN More x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 ...

Page 60: ... to Linear mode this same value will be used for the Marker Limit value Key Path 4MODULE5 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 USER KEYS NNNNNNNNNNNNNNNNN More x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 LIM LINE ON OFF x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x MARKER dB V m Sof...

Page 61: ...NNNNNNNNNNNNNNNNNNNNNN MKR LIM ON OFF is replaced by NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN LIM LINE ON OFF when the Logarithmic mode is selected The limit value is set using the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN ADJUST LIMIT softkey When switching from the Linear to Logarithmic mode this same value will be used for the Limit Line value Key Path 4MODULE5 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x...

Page 62: ...3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 MARKER dB V m x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 NEXT RT PEAK x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x PRINT DISPLAY Softkey that prints a copy of the test set gain measurement values for performance veri cation to an external printer These values will be used t...

Page 63: ...will be used to determine the correction value for the new that is Linear mode reference level The Linear mode reference level is a function of this correction value and the Logarithmic mode reference level If the marker is outside the frequency range of the selected con guration an error message will appear in the title area but conversion to the Linear mode will continue using the correction val...

Page 64: ...e time and date stamp in the upper left hand corner of the display When on the time and date will also appear on copies outputted to the printer using the NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN COPY DISPLAY softkey Key Path 4MODULE5 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 USER KEYS NNNNNNNNNNNNNNNNN More x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x ...

Page 65: ......

Page 66: ...Part 15 31 f 1 which states At frequencies equal to or above 30 MHz measurements may be performed at a distance other than what is speci ed provided measurements are not made in the near eld and it can be demonstrated that the signal levels needed to be measured at the distance employed can be detected by the measuring equipment Measurements shall not be performed at a distance greater than 30 met...

Page 67: ...t For 830 MHz the ten harmonic frequencies to be tested are 1 66 GHz 2 49 GHz 3 32 GHz 4 15 GHz 4 98 GHz 5 81 GHz 6 64 GHz 7 47 GHz 8 30 GHz 3 The fundamental signal is usually 40 dB above the harmonics In order to avoid overloading the spectrum analyzer rst converter a high pass lter must be added To lter out the fundamental frequency of 830 MHz install the 1 5 GHz lter in the test set and ensure...

Page 68: ...of maximum radiation for the rst harmonic that is 1 66 GHz The test set has been designed with three handles to make it easy to use in both vertical and horizontal polarizations 3 If the noise level at the frequency of the emission is greater than 10 dB below the limit move the antenna to 3 meters away from the EUT and repeat the above procedure For emissions that fall close to the 64 dB V m limit...

Page 69: ...KEYS then NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN MAX HOLD ON OFF If a copy of the display is required press NNNNNNNNNNNNNN MORE then NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN COPY DISPLAY softkeys to produce your output Ensure that the appropriate printer or plotter is connected and con gured For more information refer to the HP 8560 E Series Spectrum Analyzer User s Guide Making a Mea...

Page 70: ...NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN VIDEO BW AUTO MAN with MAN underlined Use the down arrow key to reduce the video bandwidth Continue to reduce the video bandwidth until the trace becomes smoothed and ceases to change Averaging occurs when the video bandwidth is smaller than the lowest pulse repetition frequency PRF of the signal being measured Note If the signal of interest is greater than 2 9 ...

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Page 72: ...tained on the same disk To use the HP 84125C download utility to restore correction factors in the HP 8564E spectrum analyzer you will need a personal computer equipped with a GPIB interface to communicate with the spectrum analyzer The GPIB interface is not for printing the correction factors to your local printer The following sections describe the computer requirements and the use of the HP 841...

Page 73: ...rd and NI 488 2 MS DOS Windows drivers or the Hewlett Packard HP IB interface card to download the system correction factors to the spectrum analyzer Most computers with Windows 3 1 3 11 or Windows 95 installed have a diagnostic program called MSD Microsoft Diagnostics that can help in identifying base address and IRQ assignments This program can most easily be accessed from the DOS prompt In DOS ...

Page 74: ...This value will need to be set in the GPIB Con guration of the HP 84125C Utility Refer to GPIB Con guration Window for more information 10 When the driver is successfully installed recycle the power and restart Windows 3 1 Setting Up HP IB Interface for Windows 95 The HP IB interface card HP 82341C can be con gured and installed using the following three steps Hardware Installation 1 Shut down Win...

Page 75: ... successfully installed recycle the power and restart Windows 95 Hardware Veri cation 1 Select Start Settings Control Panel 2 From the Control Panel window select the System icon 3 From the System Properties window select Device Manager 4 Verify that HP IB is listed There is no diagnostic test for the HP IB card Setting Up HP IB Interface for Windows NT 4 0 The HP IB interface card HP 82341C can b...

Page 76: ...ows NT Start menu select Settings then Control Panel 2 In the Control Panel window double click on the Devices icon 3 In the Devices window scroll down and verify hp341i32 is listed There is no diagnostic test for the HP IB card Setting Up AT GPIB for Windows 3 1 The following four sections describe the Windows 3 1 setup and installation of both hardware and software for the AT GPIB interface card...

Page 77: ...the Con gure button Note This value that is GPIB0 will need to be set later in the GPIB Con guration of the HP 84125C Utility Refer to GPIB Con guration Window for more information 4 In the GPIB0 AT GPIB TNT window click on the DMA Channel drop down list box and select None 5 Set the Base I O Address and IRQ to the same values set on the card in steps 2 and 3 above in Hardware Setup and Installati...

Page 78: ...t Install 4 Follow the setup instructions displayed on the computer screen to complete the installation From the GPIB setup options select the GPIB setup option from the NI 488 2 M software Hardware Con guration Follow the procedure below to con gure the hardware BEFORE it is installed 1 From the Windows 95 Start menu select Settings Control Panel then Add New Hardware 2 Start the Add New Hardware...

Page 79: ...elect Test All 8 When the message Please close all GPIB applications appears select OK 9 When the test is complete Passed will be displayed Select OK If the test does not pass refer to the AT GPIB TNT Getting Started manuals for more information Setting Up AT GPIB TNT for Windows NT 4 0 The following four sections describe the Windows NT 4 0 setup and installation of both hardware and software for...

Page 80: ...ighlighted click on the Con gure button 3 In the GPIB0 AT GPIB TNT window click on the DMA Channel drop down list box and set the DMA to the value set on the card in step 1 of Hardware Setup and Installation 4 Set the Base I O Address and IRQ to the same values set on the card in steps 2 and 3 of Hardware Setup and Installation 5 Click on the OK button 6 Click on the OK button in the GPIB Con gura...

Page 81: ...l exe To complete your setup follow the instructions on the computer screen Downloading the DLP into the Analyzer To use the HP 84125C Download Utility to reload the DLP follow the procedure below Connect a GPIB interface cable from the GPIB connector on the rear panel of the personal computer to the HP IB connector on the rear panel on the spectrum analyzer Double click on the HP 84125C Download ...

Page 82: ...nd down arrow keys on the keyboard to select a data point for editing Once a data point is highlighted the corresponding frequency and correction factor is placed in the Edit area for editing Edit Area The Edit area displays the selected antenna correction data for editing You may edit the frequency in GHz and the antenna correction factor in dB m for any of the data points Use either the Tab key ...

Page 83: ...d to select the card type card address and the spectrum analyzer address GPIB Interface Card Selection Area The GPIB Interface Card Selection area is used to select the type of interface card installed in the Personal Computer National GPIB HPIB Address Area The National GPIB HPIB Address area is used to select the card type for either the GPIB or HP IB card and also the address of the spectrum an...

Page 84: ...e cards refer to Setting Up the HP IB or GPIB Interface found earlier in this chapter Device Text Box The Device text box is used to set the HP IB address of the HP 8564E spectrum analyzer The spectrum analyzer is preset at the factory to 18 To verify this setting press 4PRESET5 NNNNNNNNNNNNNNNNNNNN CONFIG NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN ANALYZER ADDRESS Done Button The Done but...

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Page 86: ...oblem refer to the following for possible help HP 84125C System User s Guide Refer to System Functional Tests in Chapter 3 Return the FAX Cover Sheet A FAX sheet is provided at the end of this chapter as a method in which to directly contact the HP EMC support team in the event of a problem The FAX cover sheet provides the EMC support team with information about your company the product and a deta...

Page 87: ...nna Clamp 84125 20026 1 Ampli er1 HP 83051A 2 DC Power Supply HP 87421A 2 High Pass Filter 1 5 GHz1 84300 80037 1 High Pass Filter 3 5 GHz1 84300 80038 1 High Pass Filter 8 25 GHz1 84300 80039 1 Filter Clamp 84125 20027 Clamp Thumb Screw 0515 2212 RF Cable semirigid1 84125 20041 1 W1 RF Cable semirigid1 84125 20042 1 W2 RF Cable semirigid1 84125 20043 1 W3 RF Cable semirigid1 84125 20044 1 W4 RF C...

Page 88: ...rd Sales and Service o ce We recommend that you return the spectrum analyzer test set and 1 to 18 GHz antenna in their original packaging containers Packaging the HP 84125C System for Shipment Use the following steps to package the HP 84125C system for shipment to Hewlett Packard for calibration or service 1 If the HP 84125C system is being sent in for repair include the following information Any ...

Page 89: ...ion Commerce CA 90001 Air Cap looks like a plastic sheet covered with 1 1 4 inch air lled bubbles Use the pink Air Cap to reduce static electricity Wrap the instrument several times in the material to both protect the instrument and prevent it from moving in the carton 5 Seal the shipping container securely with strong nylon adhesive tape 6 Mark the shipping container FRAGILE HANDLE WITH CARE to e...

Page 90: ... Avenue Fullerton CA 92631 714 999 6700 Illinois Hewlett Packard Company 5201 Tollview Drive Rolling Meadows IL 60008 708 342 2000 Northern California Hewlett Packard Company 301 E Evelyn Mountain View CA 94041 415 694 2000 New Jersey Hewlett Packard Company 150 Green Pond Road Rockaway NJ 07866 800 403 0801 Colorado Hewlett Packard Company 24 Inverness Place East Englewood CO 80112 303 649 5000 T...

Page 91: ...8 6 Customer Support ...

Page 92: ... attenuator uncertainty occurs when the spectrum analyzer attenuator is set to a value other than the 10 dB factory calibration setting This optimizes the HP 84125C system for highest dynamic range Reference level uncertainty is caused by the addition of IF gain in the measuring analyzer It occurs when the reference level of the spectrum analyzer is set to a value other than 87 dB V The spectrum a...

Page 93: ...the HP 84125C system is used in an ambient temperature range of 20 C to 30 C To calculate the total amplitude uncertainty the individual uncertainties described above must be combined In combining them we recommend following the procedure in the National Measurement Accreditation Service NAMAS Publication NIS 81 NAMAS is now known as United Kingdom Accreditation Service UKAS This publication speci...

Page 94: ...es for the spectrum analyzer using the instrument settings above are Calibrator uncertainty 0 3 dB Analyzer atness uncertainty 4 0 dB Analyzer attenuator uncertainty 3 0 dB Reference level uncertainty 1 0 dB Resolution bandwidth switching uncertainty 0 5 dB Analyzer scale delity uncertainty 0 85 dB The measurement uncertainties for the HP 84125C test set are found in Test Set and Antenna Factor Ac...

Page 95: ...y spectrum analyzer speci cations 3 sigma speci cation normal 0 5 dB 0 17 dB Analyzer Scale Fidelity Uncertainty spectrum analyzer speci cations 3 sigma speci cation normal 0 85 dB 0 28 dB HP 84125C Test Set and System Uncertainties Antenna Factor Uncertainty HP 84125C speci cations speci cation assumed uniform 2 0 dB 1 16 dB Antenna to Test Set Mismatch HP 84125C speci cations calculated maximum ...

Page 96: ...o the result Therefore the total standard error for this example is p 1 2 1 33 2 1 0 2 33 2 17 2 28 2 1 16 2 1 7 2 3 2 57 2 23 2 2 77dB The total amplitude uncertainty is 2 2 77 1 5 7 04 dB This is the total amplitude uncertainty in the measured eld strength of the HP 84125C system for these measurement settings The uncertainty for each set of measurement conditions must be calculated separately I...

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Page 98: ...ude correction data printing 7 10 antenna correction factor editing 7 11 antenna installing 4 1 antenna speci cations and characteristics 2 3 C cable care 4 7 calibration information 8 2 changing antenna correction factors 7 11 changing test set con gurations 4 1 CLEAR MKR LIST 5 6 components checklist 3 2 con guration 1 18 GHz 4 1 18 26 5 GHz 4 4 26 5 40 GHz 4 6 con guring the test set hardware 4...

Page 99: ...ting up 7 2 setup for Windows 3 1 7 5 software setup Windows 3 1 7 6 software setup Windows NT 4 0 7 8 H handling 4 8 Hewlett Packard sales and service locations 8 4 HIGHEST PEAK 5 6 HP841254C Con g 5 6 HP 84125C utility 7 11 HP IB con guration 7 12 setting up 7 2 setup for Windows 3 1 7 2 setup for Windows 95 7 3 setup for Windows NT 4 0 7 4 I installation AT GPIB interface 7 2 HP IB interface 7 ...

Page 100: ...requirements 7 2 PRINT DISPLAY 5 9 printing correction factors 7 10 PRINT MKR LIST 5 9 product description 1 1 R regulatory information 2 8 reloading the DLP 7 10 repairing system 8 4 replaceable parts 8 2 requirements minimum PC 7 2 PC 7 2 returning for repair 8 4 returning the system 8 3 returning to HP 8 3 S SAVE MKR 1 9 5 10 SELECT LINEAR 5 10 SELECT LOG 5 10 SERVICE 5 11 service o ces HP 8 4 ...

Page 101: ...al test 3 10 installation 3 1 3 4 returning 8 4 setup 3 1 softkeys 5 1 speci cations 2 1 system interface 5 1 T test set components 3 2 con guration 1 18 GHz 4 1 con guration 18 26 5 GHz 4 4 con guration 26 5 40 GHz 4 6 hardware con gurations 4 1 TIMEDATE ON OFF 5 11 V VIEW MKR LIST 5 11 Index 4 ...

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