(c) MANUAL SWEEP control fully clock-
(f) MARKER AMP adjustment fully
wise.
clockwise.
(d) FUNCTION START STOP pushbut-
(2) Set calibrator FUNCTION SELECTOR
ton pressed,
switch to SWP REF AM.
(e) All AMPLITUDE MOD pushbuttons
(3) Adjust UUT MARKER 1 START/CW
released.
control for maximum dc deflection on oscillo-
(2) Set calibrator FUNCTION SELECTOR
scope (l-4), UUT MI pointer indicates 3 V on
switch to SWP REF AM.
calibrator scale.
(3) Short UUT EXT FM connector with
(4) Position UUT controls as follows:
adapter (l-9) and test lead (1-10).
(a) AMPLITUDE MOD MARK 1 push-
button released.
(4) Multimeter indicates between 72.9 and
(b) AMPLITUDE MOD MARK 2 push-
73.1 vdc.
button pressed.
(5) Press UUT FUNCTION MARKER
(5) Adjust UUT MARKER 2 STOP control
SWEEP pushbutton.
for maximum dc deflection on oscilloscope. UUT
(6) Multimeter indicates between 72.9 and
M2 pointer indicates 3 V on calibrator scale.
73.1 Vdc.
b. Adjustments.
(7) Set UUT SWEEP SELECTOR switch
to Cw.
(1) Repeat performance check steps (1) and
(2) .
(8) Multimeter indicates between 72.9 and
(2) Adjust UUT R18 (fig. 3-5) for maxi-
73.1 vdc.
mum dc deflection on oscilloscope.
(9) Press UUT FUNCTION AF pushbutton.
(3) Repeat performance check step (4).
(10) Multimeter indicates between 72.9 and
(4) Adjust UUT R2 (fig. 3-5) for maximum
73.1 vdc.
dc deflection on oscilloscope.
(11 ) Press UUT FUNCTION EXT FM push-
(5) Repeat performance check.
button.
(12) Allow 3 minutes for circuit to stabilize.
Multimeter indicates between 72.9 and 73.1 vdc.
a. Performance Check.
(13) Remove adapter (1-9) and cable (l-
(1) Position UUT controls as
follows:
10) from EX.T FM connector.
(a) START/CW, MARKER
1 START/
CW, MARKER 2 STOP and STOP/
F controls
b. Adjustments.
to 73 V on calibrator scale.
(1) Repeat performance check steps (1)
( b ) SWEEP SELECTOR
switch to
through (3).
MANUAL.
(2) Adjust UUT STOP HF R24 (fig. 3-6)
for multimeter indication of 73.0 vdc.
(3) Press UUT FUNCTION MARKER
SWEEP pushbutton.
(4) Adjust UUT MARKER STOP HF R30
(5) Set UUT SWEEP SELECTOR switch
to Cw.
(6) Adjust UUT MARK START HF R22
(7) Press UUT FUNCTION
F pushbutton.
ton.
(8) Adjust UUT
F CW R19 (fig. 3-6)
for multimeter indication of 73.0 vdc.
(9) Press UUT FUNCTION EXT FM push-
button Allow 3 minutes for circuit to stabilize.
18
