TB 9-6625-2218-24
(5) Connect TI to extender.
(6) Press oscilloscope POWER pushbutton to ON.
(7) Adjust C60 (fig. 1) for a frequency counter indication of 85 ns (R).
Figure 1. Delay adjustment.
10. Pulse Width and Period
a. Performance Check
(1) Connect PULSE OUTPUT to frequency counter CHANNEL A and B inputs.
(2) Measure pulse width using standard measurement technique. Frequency
counter will indicate at least 350 ns (see NOTE after 9 a (2) above).
(3) Measure period, using standard measurement technique. Frequency counter
will indicate between 7.5 and 9.1 μs for SN B070389 and below and 14 to 18 μs for SN
B070390 and above.
b. Adjustments. No adjustments can be made.
11. Pulse Amplitude and Risetime
a. Performance Check
(1) Connect PULSE OUTPUT to input of S-4 SAMPLING HEAD. Also connect
PRETRIG OUT (85 ns) to TRIG INPUT of SAMPLING SWEEP UNIT.
(2) Waveform on oscilloscope will have an amplitude of at least 200 mV.
(3) Measure risetime, using standard measurement technique.
Risetime as
indicated on oscilloscope will be 25 ps or less.
b. Adjustments. No adjustments can be made.