TB 9-6625-2084-24
(2) Adjust C566 HF COMP (fig. 2) and C586 HF COMP (Type 7623 and 7613/R7613,
SN B070000 and above) for 1 marker per 2 divisions. Readjust C568 and C588 (Types
7613/R7613, SN B069999 and below) for best compromise between 5 and 10 ns (R).
12. Risetime
a. Performance Check
(1) Install calibration fixture in LEFT VERT compartment and time base in
HORIZ compartment. Press VERT MOD LEFT pushbutton.
(2) Set calibration fixture TEST switch to VERT or HORIZ + STEP RES and
REP RATE 100 kHz pushbutton pressed.
AMPLITUDE
POSITION
(3) Adjust calibration
fixture
and
controls
for
convenient display.
(4) Press time base AUTO, AC, INT, and X10 pushbuttons. Set TIME/DIV switch
to obtain risetime display. Measure risetime using standard risetime technique. Risetime
will be 3.5 ns or less.
(5) Remove calibration fixture from LEFT VERT compartment and install RIGHT
VERT compartment.
(6) Press VERT MODE RIGHT pushbutton.
(7) Repeat technique of (3) and (4) above for right compartment.
b. Adjustments. No further adjustments can be made.
13. Calibrator Output
a. Performance Check
(1) Install vertical amplifier in LEFT VERT compartment.
(2) Connect vertical amplifier CH 1 input to TI CALIBRATOR 4-V output and
GND (front panel).
(3) Set vertical amplifier VOLTS/DIV switch to 1 V and adjust vertical amplifier
variable gain for 4 major divisions on TI.
(4) Connect oscilloscope calibrator SOURCE/MEASURE CHAN 1 to vertical
amplifier CH 1 input.
(5) Set oscilloscope calibrator for a CHAN 1, DC VOLTAGE mode output of 4 V.
Rotate oscilloscope calibrator knob below EDIT FIELD pushbutton to adjust amplitude for
4 major divisions on TI. If oscilloscope calibrator err display does not indicate within 1%,
perform b below.
b. Adjustments
(1) Rotate oscilloscope calibrator knob below EDIT FIELD pushbutton for 0%
indication on calibrator err display and adjust vertical amplifier variable gain for 4 major
divisions on TI.
(2) Disconnect oscilloscope calibrator from vertical amplifier CH 1 input.
