TB 9-6625-2144-24
9. Signal Generator Range
a. Performance Check
(1) Set TRAN/TEST/RECV switch to TEST (red dot) position and adjust PHASE
control for maximum peak indication of SET POWER meter. Adjust POWER SET control
as necessary to maintain on-scale indication.
NOTE
The PHASE control has several settings at which peak
deflection can be obtained on the power meter. Select the
setting that provides the most stable operation.
(2) Adjust TI signal generator output frequency to 8.5 GHz (15.8 GHz), using
technique of (a) through (d) below:
(a) Slowly adjust FREQUENCY control until SET POWER meter indication
dips sharply. Note FREQUENCY MC/10 dial indication.
(b) Slightly increase or decrease toward 8.5 GHz (15.8 GHz) SIGNAL FREQ
control setting and readjust PHASE control to maintain peak indication of TI power meter.
(c) Continue process of (a) and (b) above until a sharp dip occurs when
FREQUENCY MC/10 dial indicates 850 (1580).
(d) When TI signal generator frequency is set at desired point, turn
FREQUENCY MC/10 dial to a point at least 100 MHz away from TI signal generator
frequency and adjust POWER SET control for indication of SET POWER on SET
POWER meter.
(3) Repeat a (1) and (2) above for frequency of 9.6 GHz (16.9 GHz). TI signal
generator will operate at 1 mW output level (power set indication) between 8.5 and 9.6 GHz
(15.8 and 16.9 GHz).
b. Adjustments. No adjustments can be made. Failure to operate between 8.5 and
9.6 GHz (15.8 and 16.9 GHz) indicates TI klystron may need replacement.
10. Output Power Accuracy
a. Performance Check
(1) Set TRAN/TEST/RECV switch to TEST (red dot) position and DBM dial to +10 dBm.
(2) Adjust TI controls as described in 9 a (1) and (2) above to set TI signal generator
to 8.5 GHz (15.8 GHz).
(3) Connect power meter to RF OUTPUT connector.
(4) Power meter indication will be between -8.5 and -11.5 dBm. Record power meter
indication for use in (8) below and paragraph 12 a below.
(5) Repeat (1) through (4) above for frequencies of 9.05 and 9.60 GHz (16.35 and
16.90 GHz). Record power meter indication for use in (8) below.