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Figure 2. Equipment Setup.
Peak Volts

Calibration Procedure For Digital Electronic Counter An/Usm-459B Page Navigation
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TB 9-6625-2328-24
(7) Disconnect time/frequency workstation OUTPUT 1 MHz from TI CHANNEL 1 input.
(8) Connect signal generator RF OUTPUT to TI CHANNEL 1 input.
(9) Set signal generator to each output listed in table 6, press TI Stop/Single key as
indicated. TI will indicate within limits specified.
Table 6. Channel 1 Frequency Accuracy.
Signal generator
TI
output
indication
TI
(key)
(MHz)
(dBm)
Min
Max
(MHz)
(MHz)
100
-7
Stop/Single
99.999,999,97
100.000,000,03
200
-7
Stop/Single
199.999,999,94
200.000,000,06
225
-7
Stop/Single
224.999,999,93
225.000,000,07
(10)Disconnect signal generator RF OUTPUT from TI CHANNEL 1 input.
(11) Connect time/frequency workstation OUTPUT 1 MHz to TI CHANNEL 2 input.
(12)Press TI MEASURE Freq & Ratio key until TI displays FREQUENCY 2.
(13)Repeat technique of (6) through (10) above for settings in table 7.
Table 7. Channel 2 Frequency Accuracy.
Signal generator
TI
output
indication
TI
(key)
(MHz)
(dBm)
Min
Max
(MHz)
(MHz)
100
-7
Stop/Single
99.999,999,97
100.000,000,03
200
-7
Stop/Single
199.999,999,94
200.000,000,06
225
-7
Stop/Single
224.999,999,93
225.000,000,07
(14) Connect signal generator RF OUTPUT to TI CHANNEL 3 input.
(15) Press TI MEASURE Freq & Ratio key until FREQUENCY 3 is displayed.
(16) Set signal generator to each output listed in table 8 and press TI Stop/Single
key as indicated. TI will indicate within limits specified.
Table 8. Channel 3 Frequency Accuracy.
Signal generator
TI
output
indication
TI
(key)
Min
Max
(MHz)
(dBm)
(MHz)
(MHz)
100
-17
Stop/Single
99.999,999,97
100.000,000,03
1300
-17
Stop/Single
1,299.999,999,5
1,300.000,000,5
(17)Disconnect equipment from TI.
b. Adjustments. No adjustments can be made.
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