(5) Repeat performance check.
(1) Connect equipment as shown in figure
3-1.
(2) Position UUT controls as follows:
a. Performance Check.
( a ) START/CW, MARKER 1 START/
CW, MARKER 2 STOP, and STOP/ F controls
(1) Position UUT controls as follows:
to 3 v on calibrator scale.
(a) SWEEP SELECTOR switch to MAN-
(b) FUNCTION START STOP pushbut-
UAL.
ton pressed.
(b) MANUAL SWEEP control fully
(c) SWEEP SELECTOR switch to CW.
clockwise.
(C) FUNCTION START STOP pushbut-
(3) Set calibrator FUNCTION SELECTOR
to SWP REF AM.
ton pressed.
(4) Multimeter indicates between 2.9 and
(2) Set calibrator FUNCTION SELECTOR
switch to HELIX FDBK STOP RMP.
3.1 vdc.
(5) Press UUT FUNCTION MARKER
(3) Multimeter indicates between -0.1 and
SWEEP pushbutton.
+0.1 vdc.
(6) Multimeter indicates between 2.9 and
b. Adjustments. Adjust UUT R32 (fig. 3-4)
3.1 vdc.
for multimeter indication of 0.00 vdc.
(7) Position UUT controls as follows:
3-8. Marker (Low End)
(a) SWEEP SELECTOR switch to M A N-
UAL.
a. Performance Check.
(b) MANUAL SWEEP control fully
(1) Position UUT conltrols as follovs:
counterclockwise.
(a) SWEEP SELECTOR switch to MAN-
(8) Multimeter indicates between 2.9 and
UAL.
3.1 vdc.
(b) MANUAL SWEEP control fully
(9) Press UUT FUNCTION START STOP
counterclockwise.
pushbutton.
(c) MARKER 1 START/CW and MARK-
ER 2 STOP controls to 3 v calibrator scale.
(10) Multimeter indicates between +2.9 and
(d) AMPLITUDE MOD MARK 1 push-
+3.1 vdc (8690A), or +2.6 to +3.4 vdc (8690B).
button pressed.
b. Adjustments.
(e) AMPLITUDE MOD MARK 2 push-
(1) Repeat performance check steps a(2)
button released.
and (3). Adjust UUT START LF ADJ R1 (fig.
(2) Press UUT FUNCTION MARKER
SWEEP pushbutton. Adjust UUT MS START
LF ADJ R2 (fig. 33) for multimeter indication
of 3.0 vdc.
(3) Repeat performance check step a(7).
Adjust UUT MS STOP LF ADJ R3 (fig. 3-3)
for multimeter indication of 3.0 vdc.
(4) Press UUT FUNCTION START STOP
pushbutton. Adjust UUT STOP LF ADJ R4 (fig.
17
