(b) FUNCTION START-STOP pushbut-
CAUTION
ton pressed.
During this procedure, if more than 10
(c) All AMPLITUDE MOD pushbuttons
mw is applied to power meter (1-16),
released.
damage could result that would produce
(d) ALC pushbutton released.
an unsatisfactory calibration perform-
(e) START/CW control to 1 (4 for
ance.
8698B).
(f) STOP/
F control to 110.
(3) Position UUT controls as follows.
(a) POWER LEVEL switch to +10
a. Install UUT and scale into sweep oscillator
DBM.
(1-2).
(b) VERNIER control to fully clockwise
b. Set autotransformer (1-1) to ON and ad-
(CAL for 8698B Plus the following two control
just autotransformer output voltage control to
settinga).
minimum.
(c) 5 MHz CRYSTAL switch to OFF.
(d) FREQ CAL adjustment fully clock-
c. Connect sweep oscillator power cord to auto-
wise.
transformer.
(4) Turn sweep oscillator MANUAL
d. Adjust autotransformer output voltage con-
SWEEP control as listed in table 6-2. Set UUT
trol for a meter indication of 115 vac.
SCALE switch as listed. Electronic counter (l-3)
e. Energize equipment and allow sufficient time
indicates within specified limits.
for equipment to warm up and stabilize.
b. Adjustments. No adjustments can be made.
f. Set sweep oscillator LINE switch to RF and
allow a 15 minute warmup.
a. Performance Check.
(1) Connect equipment as ahown in figure
(2) Position sweep oscillator controls as
follows:
(a) SWEEP SELECTOR to MANUAL.
Table 6-2A. Plug-In Unit PL-1241/USM308(V) Frequency Range and Accuracy
34
