Internal Modulation Oscillator Tests - HP 8642A Operating Manual

Model 8642A/B
Performance Tests
PERFORMANCE TESTS
4-11. INTERNAL MODULATION OSCILLATOR TESTS
SPECIFICATION:
Electrical Characteristics
FREQUENCY
Range
Resolution
Accuracy
OUTPUT LEVEL
Range
Resolution
Accuracy
Distortion
(>0.5 volt peak)
Output Impedance
Performance Limits
20 Hz to 100 kHz
1 % of setting
2% of setting
0 to 3 volts peak
4 mV
±(4% off setting +15 mV)
<0.02%
<0.15%
600 ohms ±10%
Conditions
600 ohm load
within 1 second
0.02-15.8 kHz
>15.8 kHz
DESCRIPTION:
All Internal Modulation Oscillator specifications are checked by measuring
the specified parameters on an audio analyzer.
HP 8642A/B SYNTHESIZED
SIGNAL GENERATOR
D □ D
□ a n
a a
OO n a p
□ a
□ a
□ □
□ a
I n
□ a a a
O f o
600 OHM
FEEDTHROUGH
TERMINATION
AUDIO
ANALYZER
I
Figure 4-7. Internal Modulation Oscillator Test Setup
EQUIPMENT:
Audio Analyzer HP 8903A
Feedthrough Termination, 600 ohm ... HP 11095A
(a 600 ohm 1% resistor to ground
can be substituted. Use HP part number
0757-1100 or 0698-4015.)
4-27