TB 9-4931-488-35
(34) Set pulse generator controls for a 0.5 ms pulse width with a 1 kHz rate. Adjust
pulse generator output controls for TI meter indication of 40% (4 on 0-10 scale).
NOTE
REDUCE PEAK POWER annunciator should be off in (35)
and (36) below.
(35) Adjust oscilloscope controls as necessary to display detected RF output signal.
Readjust A26A1C9 (fig. 3) slightly (if required) to limit ringing and eliminate oscillations as
indicated on oscilloscope display.
MHz. Readjust A26A1C9 (fig. 3) for a stable square wave indication on oscilloscope display.
(37) Repeat (21) through (36) above until no further adjustment is necessary.
(38) Repeat a above.
12. Output
Level and Meter Accuracy
(Models Containing Option
004)
a. Performance Check
(1) Connect measuring receiver to RF OUTPUT.
(2) Position controls as listed in (a) through (c) below:
(a) RANGE MHz switch to 512-256.
(b) OUTPUT LEVEL 10 dB switch to +16 dBm.
(c) OUTPUT LEVEL 1 dB switch to 0 dBm.
(3) Adjust FREQUENCY TUNE control for a 512 MHz indication on
FREQUENCY MHz display, and press LOCK ON pushbutton.
(4) Set RF OFF/ON switch to ON
NOTE
In (5) and (6) below, the OUTPUT LEVEL 1 dB switch
position must be changed, as necessary, to obtain required TI
meter indications.
(5) Adjust OUTPUT LEVEL controls for a TI meter indication of -5 dB. Measuring
receiver will indicate between +13.5 and +16.5 dB as listed in table 14; if not, perform b
below.
(6) Repeat technique of (5) above for OUTPUT LEVEL 10 dBm switch settings and
meter indications listed in table 14. Measuring receiver will indicate as specified; if not,
perform b below.