Tektronix 494AP service manual O o o o o o o o o o o o o o o o o, Eouipmentreouired

PerformanceCheck Procedure- 494A/4g4ApServiceVol. 1

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or Test Flxture

TestOscilloscope

Time Mark Generator

FrequencyCountera

Prescaler

Functionor Sine-WaveGenerator

Signal Generator

SignalGenerator

Low Loss RF Cable (WL Gore)

CrystalDetector

Table4-1

EOUIPMENTREOUIRED

Vertical sensitivity,50 mV/Div to V/Div;Bandwidth,DCto 100 MHz

Markeroutput,5 s to 20 ns; accuracy 0.001%

0to 200 MHz, 1 Hz resolution,25 mV CompatiblewithTEKTRONTXDC S09

1Hz to'lMHz;0 to 20V p-p

10 Hz to 't MHz,constantoutput

0

Two leveledgenerators,500 kHz to 2.0 GHz. Output,-100dBm to *10 dBm; spectralpurity 60 dB or more below the fundamental.

Flat to at least 21 GHz

Recommendationand Use

Any TEKTRONIX7000-Seriesoscil- loscopewith plug-inunits for real- time display sueh as 7A11/7850A, andP610810XProbe

TEKTRONIXTG 501 (time/div and spanaccuracycheck)

TEKTRONIXDC 509 Option 01 (Calibratorfrequencymeasurement)

TEKTRONIXDP 501 (Center fre- quencymeasurement)

TEKTRONIXFG 503 FunctionGen- erator (externaltrigger and horizon- tal inputrequirementscheck)

Hewlett-PackardModel3336C(gain accuracy and frequency r€sponse checks)

TEKTRONIX SG 504, Hewlett- PackardModel8ilOA/B and Model 8614A generators (frequency response,lM, and displayaccuracy checks)

Tektronix Part No. 006-7609-00(fre-

quencyresponsecheck)

Hewlett-PackardModel 8473C(tre-

responsecheck)

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SweepOscillator

PowerMeterwith PowerSensor

750-to-50(} Minimum Loss Attenuator

lmpedanceMatchingPowerDivider

0.01to 21 QHz; frequencyresponse f 1 . 0dB

-30 dBm to +20 dBm tuil scale:100 kHz to 26 GHz

VSWR1.1to 100MHz

FrequencyRange:DCto 1000MHz

Hewlett-PackardModel 8350Awith Model 83595A Option 002 Plug-in (frequencyresponsecheck)

WeinschelModel 1

Hewlett-PackardModel 435A or 436A with 8/,82Aand 8485A Power

Tektronix Part No. 011-00s7-01

(Option07 only)

Tektronix Part No. 067-1232-00

(Optlon07 only)

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BNC MAIE tO BNC Male Adapter, 75()

Tektronlx Part No. 103-0254-00 (Option07 only)

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Low-PassFilter

UHFCombGenerator

Power Module (At least 4-wide)

Must haverolloff of 40 dB or more al

Providecomblineto 18 MHz;accuracy 0 . 01%

For usewithTG 501,DC 509,DP 501, FG 503,SG 504.and067-0885-00

Texscanor Lark

TEKTRONIX Calibration Fixture 067-088s-00 (frequency readout accuracy

TM 500 Power Moduleb

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IThe frequency counter must b€ clocked by an external frequency standard such as wwvB. b Option 07 it checking en Option 42 Spactrum Analyzer.

4-2

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