TB 9-6625-2084-24
11. High-Frequency Timing
a. Performance Check
NOTE
For time bases without nanosecond switch settings, check the
fastest ranges.
NOTE
f or vertical amplifiers without 50 input impedance, use 50
F
eedthrough termination to connect oscilloscope calibrator.
(1) Install vertical amplifier in TI left vertical compartment and time base in
horizontal compartment.
(2) Connect oscilloscope calibrator SOURCE/MEASURE CHAN 1 to vertical
amplifier CH1 INPUT.
(3) Set oscilloscope calibrator for a CHAN 1, MARKER mode output of 1 ms.
(4) Set time base TIME/DIV OR DLY TIME switch to 1 ms and MAG pushbutton
to X1.
(5) Set vertical amplifier CH 1 and CH 2 VOLTS/DIV switches to .5 V and
DISPLAY MODE switch to CH 1.
(6) Adjust time base POSITION control to align 1st marker with 1st vertical
graticule line.
(7) Adjust time base SWP CAL control (front panel) for 1 marker per division (over
center 8 divisions).
(8) Set oscilloscope calibrator for a CHAN 1, MARKER mode output of 10 ns.
(9) Set time base TIME/DIV OR DLY TIME switch to 0.1 s and MAG pushbutton
to X10.
(10) Adjust time base POSITION control to align nearest marker with 2d vertical
graticule line. Rotate oscilloscope calibrator knob, below EDIT FIELD pushbutton, to
align 10th time marker with 10th vertical graticule line. If oscilloscope calibrator err
readout indication is not within 3%, perform b (1) below.
(11) Set time base TIME/DIV OR DLY TIME switch to 0.05 s.
(12) Adjust time base POSITION control to align nearest marker on 2d vertical
graticule line. Rotate oscilloscope calibrator knob, below EDIT FIELD pushbutton, to
align 5th time marker with 10th vertical graticule line. If oscilloscope calibrator err
readout indication is not within 3%, perform b (2) below.
b. Adjustments
(1) Adjust C588 HF COMP (fig. 2), (Types 7623 and 7613/R7613, SN B070000 and
above) C568 HF COMP and C588 HF COMP (7613/R7613, SN B069999 and below) for
1 marker per division (R).
