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Maintenance

Replacing the Meter

1. Remove the back cover by unscrewing the four 8-32 Phillips flat

head screws.

Note:

The screws are located two on each side of the meter

housing near the back edge at the top and bottom of the sides.

2. Loosen the two 8-32 nuts securing the meter leads
3. Remove the meter leads.
4. Remove the two 10-32 oval head Phillips screws securing the

meter shock ring.

5. Pull the meter and shock ring assembly out of the housing from

the back.

Note:

If the three rubber shock mount buttons, P/N 4420-

098, that the meter rests on are to be reused, be careful not to
lose them. However, if the replacement shock ring, P/N
4410A261, is to be used instead, the buttons may be discarded.

6. Remove the meter retaining ring and shock mount from the meter.
7. Replace the meter.

Note:

If the replacement shock ring is used, peel off the

white strip covering the adhesive backing. Carefully adhere the
shock ring to the front bezel flange.

Note:

Be sure to observe the polarity when replacing the

leads to the meter, black to negative, red to positive.

8. Zero adjust the meter.

Figure 10 Replacing the Meter

Thruline

WAT

TMETER

MODEL

4410A

SERIAL

NUMBER

IMPEDANCE

ELECTRONIC

CORPORA

TION

CLEVELAND

(SOLON),

OHIO

MUL

TIPY

SWIT

SETTING

ELEMENT

FACT

NGER

LTA

ELE

LIN

RIN

ATIO

OFF

O.1

0.3

LIN

Thruline

TTMETER

MODEL

4314B

SERIAL

NUMBER

XXX

BIRD

ELECTRONIC

CORPORA

TION

CLEVELAND

(SOLON),

OHIO

Содержание 4314B

Страница 1: ...ONAL THRULINE WATTMETER Operations Manual Model 4314B Copyright 2010 by Bird Electronic Corporation Instruction Book Part Number 920 4314B Rev E Thruline is a registered trademark of Bird Electronic C...

Страница 2: ......

Страница 3: ...to remove the RF transmission line while RF power is present WARNING Do Not Service Or Adjust Alone Under no circumstances should any person reach into an enclosure for the purpose of service or adjus...

Страница 4: ...not correctly performed could result in damage to the instrument WARNING Exposure to RF power radiation and the possibility of RF shock or burns exists with some operating conditions Always be sure to...

Страница 5: ...line load when it is first applied to the RF line CAUTION Use reasonable care in handling Do not drop or subject the wattmeter or elements to hard blows as accuracy may be impaired or other damage may...

Страница 6: ...EL INSTRUMENTO BENUTZUNG WIRD DAS GER T AUF ANDERE WEISE VERWENDET ALS VOM HERSTELLER BESCHRIEBEN KANN DIE GER TESICHERHEIT BEEINTR CHTIGT WERDEN UTILISATION TOUTE UTILISATION DE CET INSTRUMENT QUI N...

Страница 7: ...GELTEN NUR F R GESCHULTES FACHPERSONAL ZUR VERMEIDUNG GEF HRLICHE ELEKTRISCHE SCHOCKS SIND WARTUNGSARBEITEN AUSSCHLIE LICH VON QUALIFIZIERTEM SERVICEPERSONAL DURCHZUF HREN ENTRENTIEN L EMPLOI DES INST...

Страница 8: ...SERVER L L MENT DANS LA PRISE LORS DE L EMPLOI HF SPANNUNG KANN IN DER HF ELEMENT BUCHSE ANSTEHEN ELEMENT W HREND DES BETRIEBS EINGEST PSELT LASSEN PUEDE HABER VOLTAJE RF EN EL ENCHUFE DEL ELEMENTO RF...

Страница 9: ...ically updated When inquiring about updates to this manual refer to the part number and revision on the title page Literature Contents Chapter Layout Introduction Describes the features of the Thrulin...

Страница 10: ...viii...

Страница 11: ...Characteristics and Capabilities 1 Power Requirements 2 Additional Equipment 2 Chapter 2 Installation 3 Portability 3 Connections 3 Chapter 3 Theory of Operation 5 Traveling Wave Viewpoint 5 Coupling...

Страница 12: ...ing 23 Preventative Maintenance 23 Line Section Care 24 Inspection 24 Troubleshooting 24 Battery Procedures 26 Testing the Batteries 26 Replacing the Batteries 26 Replacing the Meter 27 Replacing the...

Страница 13: ...es through a lateral hole and into the Plug In Element socket on the RF line section The finger has a button on its end which makes connec tion with the contacts of the Plug in Element The silver plat...

Страница 14: ...s which typi cally provide 20 hours of operation AC adapters are also available for use with either a 115 or 230 VAC line Additional Equipment The only additional equipment required by the Model 4314B...

Страница 15: ...t Parts on page 33 1 Insert the Model 4314B Thruline Wattmeter in coaxial transmission lines of 50 ohms nominal impedance The signal source and load con nections can be made to either side of the watt...

Страница 16: ...ement installed in the wattmeter has a sufficiently high wattage rating to handle the line load when it is first applied to the RF line 1 5 16 33 3mm 3 3 8 3 5 8 92 1mm 85 7mm 6 7 8 174 6mm 4 101 6mm...

Страница 17: ...t requiring the use of unwieldy and expensive slotted line equipment Many users find that the ratio of is more useful than VSWR Coupling Circuit When the wattmeter is connected into the system the RF...

Страница 18: ...lects beyond the bat tery test mark on the meter scale If the pointer fails to reach the mark the batteries need replaced Replacement of both batteries simultaneously will assure that sufficient batte...

Страница 19: ...Q3 to maintain the read ing of the meter even though the peak of the pulse is no longer applied to the amplifier assembly input Only the peak power is indicated even though there is a wide fluctuatio...

Страница 20: ...Bird Technologies 8 Figure 3 Model 4314B Schematic Diagram...

Страница 21: ...ODEL 4314B SERIAL XXXX BIRD ELECTRONIC CORPORATION CLEVELAND SOLON OHIO DANGER RF VOLTAGE KEEP ELEMENT IN LINE SOCKET DURING OPERATION 15 80 F S 30 UA PN 2080 002 W ELECTRONIC 20 0 BIRD 10 5 30 40 T T...

Страница 22: ...Bird Technologies 10...

Страница 23: ...sibility of RF shock or burns exists with some operating conditions Always be sure to turn off the transmitter when connecting or disconnecting a wattmeter Be sure the transmission line is terminated...

Страница 24: ...ea surements are being made The index pin protruding from the element s body should rest against the stop on the line section in both the forward and reflected position The small catch in the lower le...

Страница 25: ...maline Load Resistor of proper power rating forms a highly useful absorption wattmeter Since the reflected power will be negligible it will be unnecessary to rotate the element from the forward direct...

Страница 26: ...50 100 150 200 300 400 5 2 4 6 8 1 0 1 2 1 4 1 6 1 8 2 0 4 6 8 10 12 14 16 18 20 VSWR 1 Reflected Power Forward Power Reflected Power Forward Power 1 FORWARD POWER WATTS REFLECTED POWER WATTS 3 0 2 5...

Страница 27: ...1 5 2 0 2 5 3 0 4 0 5 0 25 30 40 50 100 150 200 300 400 500 01 02 03 04 05 06 07 08 09 1 2 3 4 5 6 7 8 9 1 0 3 0 2 5 2 0 1 6 1 5 1 4 1 3 1 2 5 1 2 0 1 1 6 1 1 4 1 1 2 1 1 0 1 0 9 1 0 8 1 0 7 1 0 6 1...

Страница 28: ...ated components can be tested using the Thruline Wattmeter The method of testing depends upon the cir cumstances involved for any particular test Some of these tests are listed below The standing wave...

Страница 29: ...to forward power ratio check or with a dc continuity check or leakage check since open circuits or shorts may exist part of the way along the line Attenuation can also be determined as described abov...

Страница 30: ...average and peak readings find the intersection of the carrier and peak powers on figure 7 to determine the percentage of positive modulation Figure 7 Graph Converting Carrier Power and Peak Power to...

Страница 31: ...Operating Instructions 19...

Страница 32: ...the impedance of the load as seen at the source If the adjustments for maximum power transfer were made with the Model 4314B in place removing it short ens the line by four inches plus two connectors...

Страница 33: ...TERY switch to the ON position Leaving the unit in other switch positions will shorten battery life WARNING Always be sure transmitter power is off before disconnecting the unit from the transmission...

Страница 34: ...Bird Technologies 22...

Страница 35: ...ot restrict the entry of the element Clean the meter and meter housing using a cloth moistened with a mild detergent solution Do this only when necessary and take care not to allow water to enter any...

Страница 36: ...its complexity field repair of the Model 4314B Thruline Watt meter is recommended only for certain malfunctions Only those func tions within the scope of normal maintenance are listed If a malfunctio...

Страница 37: ...e Check connections in line equipment interconnecting cables and auxiliary in line equipment Wattmeter out of calibration Check calibration See Calibrating the Wattmeter on page 30 Intermittent or inc...

Страница 38: ...ark replace the batteries Replacing the Batteries 1 Remove the back cover by unscrewing the four 8 32 Phillips flat head screws Note The screws are located two on each side of the meter housing near t...

Страница 39: ...ed instead the buttons may be discarded 6 Remove the meter retaining ring and shock mount from the meter 7 Replace the meter Note If the replacement shock ring is used peel off the white strip coverin...

Страница 40: ...p on connector 5 Remove the DC jack wires item 5 6 Remove the meter wires item 3 also at the printed circuit board Note Care should be taken not to break the wires Note Note the wire location for ease...

Страница 41: ...strumentation Module Replacing the Quick Change Connectors 1 Remove the four 8 32 screws from each corner of the square flange on the connector 2 Pulling the connector straight outward 3 Install the n...

Страница 42: ...that the same read ing is attained in both average and peak modes Install a voltage dropping variable voltage dividing potentiometer and a battery in series with the input of the amplifier Make sure t...

Страница 43: ...or any reason request an RMA through the Bird Technologies website link shown below All instruments returned must be shipped prepaid and to the attention of the RMA number Bird Service Center 30303 Au...

Страница 44: ...s 8 of full scale Frequency Range 0 45 to 2700 MHz either mode Pulse Parameters Minimum duty factor Minimum repetition rate Minimum pulse width 1 0 x 10 4 30 pps 0 4 microseconds at 100 2300 MHz 1 5 m...

Страница 45: ...2 9 V battery 5 1375 8 2 QC connectors Female N normally supplied 9 1 Housing cover assembly 4314 114 10 1 Dress nu 5 1670 11 1 AC to DC converter 115 Vac 230 Vac 5 1864 5 1940 Connector Part Number N...

Страница 46: ...Bird Technologies 34 Figure 13 Replacement Parts Inside Back 1 2 3 4 5 6 7 8 9...

Страница 47: ...y such claim for breach of these warranties shall be deemed to be waived by Buyer unless made in writing within ten days from the date of discovery of the defect The above warranties shall not extend...

Страница 48: ...Bird Technologies 36...

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