HP 8901B - Page 203

Service
On
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On
45.N AM and FM Calibrator and RF Power Reference Control.
Calibrator), 29 (FM Calibrator), and 3 (RF Power Reference).
Off
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On
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N
0
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FM
Calibrator
Frequency
Low
Low
Low
Low
Low
Low
High
High
High
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High
Switching
Switching
Switching
Switching
Switching
Low
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High
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High
Switching
Switching
Switching
Switching
Switching
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Model 8901B
See Service Sheets
30 (AM
Off
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RF
Power
Reference
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46.N Count Internal Signals. The Counter counts the internal signal selected by N for 100 ms and
displays the count. This
is equivalent to measuring the frequency of the signal with 10 Hz resolution
for most signals. See Service Sheets
22 and 23.
N=l
N=2
Intermediate Frequency. See Service Sheet 10.
Voltage-to-Time Converter.
10 000 counts equal lV, but includes a 0.6V offset. See Service
Sheet 15 or Special Functions 49 and 50.
FM Calibrator. See Service Sheet 29.
High Frequency VCO Divided by 8. This is the 40 to 80 MHz signal proportional to the LO
frequency. See Service Sheet 17.
Selected Time Base Reference. The display should read
100000011. See Service Sheet 22.
External Time Base Reference. The display should read lOOOOOOfl when an external
reference is connected. See Service Sheet 22.
N=3
N=4
N=8
N=9
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8B-6 Special Functions
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