HP 654A Operating And Service Manual page 18

Test oscillator
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Section V
Model 654A
Table 5-1. Required Test Equipment
INSTRUMENT
TYPE
REQUIRED CHARACTERISTICS
RECOMMENDED MODEL
Electronic
Counter
Frequency: 10.00Hz to 10.00MHz.
Period: 1.000ms to 100.0ms.
-hp- Model 5245L
Electronic Counter.
AC Differential
Voltmeter
Range: .9999V rms and 9.999V rms full scale.
Accuracy: at least . 1% of reading at lkHz.
-hp- Model 741B AC-DC
Differential Voltmeter/
DC Standard.
Wave
Analyzer
Frequency Range: 1MHz to 22MHz.
Must be compatible with Tracking Oscillator.
(Note: the H05-312A is required only for distortion checks,
otherwise a standard -hp- 3I2A can be used.)
-hp- Model H05-312A
Wave Analyzer.
Tracking
Oscillator
Must be capable of expanding wave analyzer
meter indication to resolve 0.05dB.
-hp- Model 3I3A
Tracking Oscillator.
Distortion
Analyzer
Distortion Sensitivity: greater than 46dB.
Frequency range: 10Hz to 600kHz.
-hp- Model 333A
Distortion Analyzer.
Amplifier
Gain: 40dB.
Frequency range: IkHz to 10MHz.
-hp- Model 461A General
Purpose Amplifier.
AC Voltmeter
Frequency range: 10Hz to 10MHz.
Voltage range: 1.00mV rms to 1.00V rms
(dB scales referenced to lmW into 600 ohms).
-hp- Model 400E
AC Voltmeter.
DC Null
Voltmeter
Range: lOuV to 10mV.
Accuracy: +/-2% of full scale.
-hp- Model 419A
DC Null Voltmeter.
DC Voltmeter
Range: 0.IV to 100V.
Input Impedance: 10 megohms.
-hp- Model 427A
Multi- Function Meter.
Oscilloscope
Sensitivity: 5mV/cm.
Bandwidth: dc to 50MHz.
-hp- Model 180A
Oscilloscope with 1801 A
and 1820A plug- ins.
Feedthrough
Terminating
Resistance
Resistance:
(a) 50 ohms +/-.25%
(b) 75 ohms +/-. 25%
Feed-Thru
(a) - hp- Model I 1048C
(b) -hp- Model 11094C
Attenuators
Frequency range: 10Hz to 10MHz ( with known
accuracy at 10kHz, 300kHz and 10MHz).
Attenuation range:
(a) 9dB in 1dB steps.
(b) 90dB in 10dB steps.
VHF Attenuators
(a) -hp- Model 355C
(b) -hp- Model 355D
Thermal
Converters
Frequency range: 10Hz to 10MHz.
Input: at least + 10dBm into rated input impedance.
Input impedance:
(a) 50 ohms, unbalanced.
(b) 75 ohms, unbalanced.
(c) 135 ohms, balanced.
(d) 150 ohms, balanced.
(e) 600 ohms, balanced.
Thermal Converters
(a) -hp- Model 11050A
(b) -hp- Model HOI - 11050A
(c) -hp- Model HII - 11050A
(d) -hp- Model H12- 11050A
(e) -hp- Model H10- 11050A
BNC to Binding
Post Adapter
-hp- Model 10110A
(2 required)
Resistors.
1/8 W, metal film.
(a) 75 ohms, .25% ( two required).
(b) 135 ohms- 1% ( four required).
(c) 300 ohms, . 1% ( two required).
-hp- Part No:
0698-6262
0698-7364
0698-6295
Note: The following items are not commercially available
but can be easily constructed; refer to the figures
listed for schematics and parts lists.
DC Reference Supply
Figure 54
75 ohm to 50 ohm Impedance Converter
Figure 5-7
Balance Box
Figure 5-9
10MHz Low-Pass Filter
Figure 5-12
Note: The following are useful optional items.
1).Jumper cable, 8 in., -hp- Part No. 10502-6001
(2 required, see Paragraph 5-30a)
2).Toriod Coil form, -hp- Part No. 9170-0995
(See Paragraph 5-24)
3).Sine-Wave Signal Generator: may be required for
troubleshooting
(Refer to Paragraphs 5-79 and 5-83.)
5-2

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