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Preparing the Extension Unit for Use

R&S

®

ZVAX-TRM

15

User Manual 1325.1268.02 ─ 04

It is recommendable to switch the extension unit to standby state or switch it off by the
rear panel AC power switch if it is not used for some time.

3.2.2 USB Connectors

The R&S

 

ZVAX-TRM provides two USB type

 

A connectors on the front panel and

another one on the rear panel.

Once the extension unit is connected to the network analyzer via the type

 

B USB con-

nector on the rear panel of the extension unit (see 

Chapter 3.3.2, "USB FROM NWA"

,

on page 16), the USB type

 

A connectors are functionally equivalent to the USB

type

 

A connectors of the network analyzer (USB hub functionality). They can be used

to connect supported USB devices (calibration units, power meters, keyboard, mouse,
printer, USB stick, etc.) to the R&S

 

ZVA/ZVT.

3.2.3 RF Connectors

As shown in 

Figure 3-1

, the R&S

 

ZVAX-TRM provides four groups of RF connectors.

The groups are labeled 1 to 4, indicating the related port on the R&S

 

ZVA/ZVT.

The RF connectors in the upper part of the front panel are used to establish the
required SOURCE, REF and MEAS paths between analyzer and extension unit (see

Chapter 3.4.5, "Connecting the extension unit to the R&S

 

ZVA/ZVT"

on page 22).

Groups 1 and 2 each comprise a 

test port connector

, located at the vertical center of

the front panel. It is equipped with a high power directional coupler (up to +43 dBm)
and replaces the corresponding test port connector on the NWA.

The RF connectors in the lower part of the front panel provide direct access to the
SOURCE and MEAS path of ports 1 and 2. If not required, an extension path can be
bypassed using electronic transfer switches (controlled by the NWA firmware); there is
no need to jumper the IN and OUT connectors.

Maximum RF power and DC offset

Observe the maximum RF output power at the test ports on the extension unit and the
maximum RF input power at the network analyzer ports (see data sheets). If the TX or
RX power at the test port connector of the extension unit is high, external attenuators
may be required to prevent excess input power at MEAS IN, SOURCE OUT, and REF
IN (NWA). These external attenuators can be inserted at the respective port or via the
external SRC/MEAS path access.
In addition, it is important that the signal fed in at the test port connector contains no
DC offset, as this may impair the measurements and even cause damage to the exten-
sion unit.

 

 

Front Panel Tour

Summary of Contents for ZVAX-TRM

Page 1: ...R S ZVAX TRM Extension Unit User Manual User Manual 1325 1268 02 04 I 2 Test Measurement...

Page 2: ...ut amplifiers and combiners The full set of options is listed in Chapter 4 2 Options on page 27 2015 Rohde Schwarz GmbH Co KG M hldorfstr 15 81671 M nchen Germany Phone 49 89 41 29 0 Fax 49 89 41 29 1...

Page 3: ...tandby Key 14 3 2 2 USB Connectors 15 3 2 3 RF Connectors 15 3 2 4 Front Panel Indicator LEDs 16 3 3 Rear Panel Tour 16 3 3 1 Mains Connector and Switch 16 3 3 2 USB FROM NWA 16 3 3 3 USB 17 3 3 4 CAS...

Page 4: ...by and Ready State 24 3 5 Maintenance 24 3 6 Storing and Packing 25 4 Models and Options 27 4 1 Models 27 4 2 Options 27 4 2 1 Overview 28 4 2 2 Pulse Modulators 29 4 2 3 Output Amplifiers 29 4 2 4 Br...

Page 5: ...nnection measurement Once the RF connections between network analyzer and extension unit are estab lished the R S ZVAX TRM allows to condition the RF signals generated by the ana lyzer by looping inte...

Page 6: ...n be selected per channel and port The R S ZVAX TRM base unit offers two test ports equipped with high power direc tional couplers up to 43 dBm and supports user defined source and measurement path ex...

Page 7: ...put the unit into operation and to connect it to the network analyzer is given in Chapter 3 4 Putting the Extension Unit into Operation on page 18 The final chapter describes the available options se...

Page 8: ...About the Extension Unit R S ZVAX TRM 8 User Manual 1325 1268 02 04 Documentation Overview...

Page 9: ...ZVAX TRM frontend ports Src Out Src In Port 2 Src Out Src In Src 3 Out Meas Out Meas In Pulse Modulators optional Amplifiers optional Low noise Preamplifiers optional Combiners optional Figure 2 1 R...

Page 10: ...K7 at the R S ZVA ZVT To control the pulse modulators of the R S ZVAX TRM the analyzer can provide pulse generator signals via the CASCADE interface see Chapter 3 3 4 CASCADE IN on page 17 requires so...

Page 11: ...es access to the source and measurement paths of ports 1 and 2 similar to the Direct Access connectors at the R S ZVA ZVT This allows to loop external compo nents filters attenuators isolators amplifi...

Page 12: ...ch Coupler Figure 2 2 RF signal flow for ports 1 and 2 w o combiners In contrast ports 3 and 4 are physically provided by the analyzer R S ZVA ZVT R S ZVAX TRM SOURCE MEAS MEAS Receiver REF Receiver R...

Page 13: ...network analyzer there is no risk of damage as long as there are no external amplifiers or other active devices looped into the RF paths External amplifiers or other active devices may be used to inc...

Page 14: ...analyzer s help sys tem Do not connect the unit to other USB hosts e g a PC and do not insert any USB hubs between the analyzer and the unit as this may cause damage to the unit or the host It is safe...

Page 15: ...alyzer and extension unit see Chapter 3 4 5 Connecting the extension unit to the R S ZVA ZVT on page 22 Groups 1 and 2 each comprise a test port connector located at the vertical center of the front p...

Page 16: ...r the R S ZVAX TRM67 3 3 Rear Panel Tour The rear panel contains the mains connector with the AC power switch and several connectors for control and pulse generator signals Figure 3 2 R S ZVAX TRM Rea...

Page 17: ...erator signals from the R S ZVA ZVT via CASCADE OUT requires option R S ZVA K27 on the R S ZVA ZVT Refer to the detailed description of the pulse generator in the help system of your network analyzer...

Page 18: ...e instrument All fan openings are unobstructed and the airflow perforations are unimpeded The minimum distance from the wall is 10 cm The instrument is dry and shows no sign of condensation The instru...

Page 19: ...g the rear panel perforations must be unobstructed The distance to the wall should be at least 10 cm Electrostatic discharge To avoid damage of electronic components of the DUT and the extension unit...

Page 20: ...Use R S ZVAX TRM 20 User Manual 1325 1268 02 04 Figure 3 3 R S ZVA67 stacked on top of R S ZVAX TRM units not yet fixed by adapters and screws 1 front handles 2 positions for fixing screws Putting th...

Page 21: ...apters and screws Moving stacked units The adapters ensure the exact and strainless fit of the semirigid RF cabling to from R S ZVA delivered with the R S ZVAX TRM However they are not designed to for...

Page 22: ...of NWA and extension unit the units have to be interconnected 1 USB Connection Use the USB type A to USB type B cable delivered with the R S ZVAX TRM to connect a USB type A port of the NWA to the US...

Page 23: ...d with all shielding covers fitted Use only appropriate shielded signal and control cables see Chapter 3 2 3 RF Connectors on page 15 Observe the EMI classifica tions of both the R S ZVAX TRM and the...

Page 24: ...n the instruments Switching on the connected extension unit while the network analyzer is booting can cause problems It is safe to switch on the R S ZVAX TRM while the R S ZVA net work analyzer is off...

Page 25: ...e extension unit can be stored at the temperature range quoted in the data sheet When it is stored for a longer period of time the unit should be protected against dust The original packing should be...

Page 26: ...Preparing the Extension Unit for Use R S ZVAX TRM 26 User Manual 1325 1268 02 04 Storing and Packing...

Page 27: ...r Receiver Access 10 MHz to 40 GHz R S ZVAX TRM50 1322 6500 50 Unit for installation of R S ZVAX50Bxxx options to extend the measurement capabilities of R S ZVA and R S ZVT with Direct Generator Recei...

Page 28: ...ZVAXxxB112 Src Out Src In Port 2 Src Out Src In ZVAXxxB213 ZVAXxxB73 Src 3 Out ZVAXxxB224 Meas Out Meas In ZVAXxxB134 ZVAXxxB32 ZVAXxxB31 Table 4 2 Option Overview R S ZVAX TRMxx xx 24 40 50 67 Pulse...

Page 29: ...e internal source paths transfer switches combiners etc Table 4 4 R S ZVAX TRMxx Output Amplifier Options xx 24 40 50 67 Order number Name Description 1322 6981 xx R S ZVAXxxB112 Output amplifiers for...

Page 30: ...Ts with lower gain Table 4 6 R S ZVAX TRMxx LNA Options xx 24 40 50 67 Order number Name Description 1322 7020 xx R S ZVAXxxB31 Low noise preamplifier for R S ZVAX TRMxx measurement path Port 1 10 MHz...

Page 31: ...ifiers Option R S ZVAXxxB31 30 Option R S ZVAXxxB32 30 M Mains connector 16 Mains switch 16 Maintenance 24 Measurements High power 5 Pulsed 5 10 Single connection 5 Two tone 5 Models 27 O Options Comb...

Page 32: ...Maximum RF power 15 RF signal flow ports 1 and 2 11 S Safety instructions 13 ESD protective measures 14 General 13 Maximum power levels 13 RF connection 13 USB connection 14 Setup 19 Signal conditioni...

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