TB 9-6625-2274-40
1Indicates
test point or adjustments are located below top edge of board.
Figure 1. Test point and adjustment locations.
t. Press CONTINUE pushbutton. TI display will indicate HEAD.
u. Adjust A7R1300 (fig. 1) for a multimeter indication of +5.25 V dc 0.05V.
v. Remove multimeter connections.
Press CONTINUE pushbutton.
Display will
indicate DELY.
w. Connect TRIGGER OUTPUT to oscilloscope Vertical 1 input. Connect A7TP1200
(fig. 1) to oscilloscope Vertical 2 input using X10 probe. Acquire signal using oscilloscope.
Set oscilloscope trigger to CH 1 and positive slope. Set oscilloscope to measure delay
between the two signals.
x. Adjust A7R1200 (fig. 1) until oscilloscope indicates a delay of 120 ns 10 ns at the 50
percent amplitude points between the trigger positive edge and the pulse drive negative
edge waveforms.
y. Remove oscilloscope connections from TI.
z. Leave cal/normal switch A9S1061 (fig. 1) in the down position and continue with
next adjustment check.
18. Calibration Factors
a. Connect OUTPUT to multimeter using 50
feedthrough termination.
16
