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SSB Transmitters
164
Measurement Procedure:
1. Connect the Transmitter Under Test as shown.
CAUTION: The RF present at the Test Set RF IN/OUT connector must not exceed 60W
continuous (or 100 Watts for 10 sec/minute) or permanent instrument damage
may result.
On the Test Set:
2. Press the PRESET key.
3. Press the TX key.
Using the knob and data entry keys:
4. Set AF Anl In to SSB Demod.
Determine readout measurement:
5. For actual frequency readout, continue with step 7.
6. For frequency error:
a Set Tune Mode to Manual.
b Set Tune Freq to the expected carrier frequency.
On the Radio:
7. Key the Transmitter and keep keyed until the remaining steps are complete.
Test Set Options Required
The typical error for the standard Test Set timebase is 2-3 Hz per
1 MHz (when measuring carrier frequency). If greater frequency
accuracy is required, use an Test Set with Option 001 (High Sta-
bility Timebase).
Special Test Considerations
The accuracy and stability of both the AF source and the RF
counter, and knowledge of the transmitter’s carrier suppression
and the current operating side-band selection are required for
precise frequency/frequency error measurements.