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13. 20 MHz Reference Adjustments
13. 20 MHz
Reference
Adjustments
Reference
Related Performance
Test
Description
Equipment
RF Section:
Al6
20 MHz Reference
Calibrator Amplitude Accuracy Test
The 20 MHz output is peaked and amplitude checked for proper level.
The INTERNAL REFERENCE output level is then checked for proper
output level as compared to input from
A27
Time Base. Finally, the
COMB DRIVE and CAL OUTPUT are adjusted for proper power levels.
SYNTHESIZER LEVEL
6
GENERAT
R
0
)I
SPECTRUM ANALYZER
POWER METER
DIGITAL VOLTMETER
(Devise Under
Teat)
Figure 3-56. 20
MHz
Reference Adjustments Setup
Spectrum Analyzer
.........................
HP
8566A/B
Digital Voltmeter (DVM)
........................
HP
3456A
Frequency Synthesizer
.........................
HP
3335A
Power Meter .................................
..HP436
A
Power Sensor
...................................
HP8482
Digitizing Oscilloscope
........................
HP
54501A
1O:l
Divider Probe
...........................
HP
10432A
Adapters:
Type N (m) to BNC (f) . . . . . . . . . . . . . . . . . . . . . . . . .
1250-0780
Type N (f) to BNC (f) . . . . . . . . . . . . . . . . . . . . . . . . . .
1250-1474
Cables:
BNC to SMB cable Snap-On (2 required) . . . . . . 85680-60093
Adjustments
3-103