TB 9-6625-2293-35
a. Performance Check
(1) Simultaneously press and hold ∆t and ∆V pushbuttons; then press and hold
TRIGGER SLOPE pushbutton. Hold in all three pushbuttons for approximately 1 second
and then release. Top of display will indicate: DIAGNOSTIC. PUSH A/B TRIG TO
EXIT.
(2) Push TRIGGER MODE switch up to step to CAL 01 (lower left corner of
display).
CAUTION
Upon entering CAL 01, the input coupling is automatically set
to 50 Ω DC and 50 Ω overload protection is disabled. Before
starting procedure, make sure any 50 Ω overload condition has
been cleared.
NOTE
In this procedure, pressing up and releasing TRIGGER
COUPLING switch stores current calibration parameter being
set and increments routine to next step (except where
otherwise noted).
NOTE
Throughout this paragraph the INTENSITY and POSITION
controls may be adjusted as necessary for proper viewing of
displayed signal.
(3) Connect digital multimeter LO to chassis ground and HI to TI CALIBRATOR
output (front panel).
(5) Push up and release upper TRIGGER COUPLING switch.
The display
readout will indicate ADJ ∆, (step) 1, 100 s and 1 s.
(6) Digital multimeter indication will be 0 mV l mV.
(7) Set oscilloscope calibrator for a CHAN 1, MARKER mode output of .1 ms/div.
(8) Set VOLTS/DIV switch as needed for a convenient signal amplitude.
(9) Adjust TRACE SEP control as needed to separate the A and B sweeps.
(10) Adjust CH 1 POSITION control as needed to view both A and B sweeps.
(11) Adjust HORIZONTAL POSITION control to start trace at the left graticule
line.
(12) Adjust ∆REF OR DLY POS and ∆ controls to align both intensified zones with
the 6th time marker near graticule center and to superimpose the delayed B sweep time
markers.
(13) Push up and release TRIGGER COUPLING switch. Check digital multimeter
indicates between 398 mV and 402 mV and TI readout indicates ADJ ∆ (step) 2, 100 s, 1 s.