Tektronix Type 82 PLUG-IN Instruction Manual page 98

Calibration Procedure Corrections
Add to steps 26 and 27 of the Type 82, and to step 15 of the Type 86,
C165 (C265) is selected to set C167 (C267) into the middle of its
Correct steps 28 and 29 of the Type 82, and step 16 of the Type 86 to
read as below. Only the procedure for calibrating one X10 amplifier
is outlined below since the A and 3 X10 amplifiers in the Type 82 ditfer
only in circuit number. The circuit numbers used are those for the
82 (channela) and the 86 X10 arnplifiers.
X10 High-Frequency Compensation
Insert a 50-ohm 10:1 attenuator between the TU-5 pulser output and the
50-ohm termination. Set the GAIN switch to X10.
If a component in the X10 amplifier has been changed, then R318,
R377, R383 and R328 should be set to maximum resistance before
starting the procedure.
During the following procedure remember to use sweep rates
which will be slow enough to cover the area being adjusted and a
small portion more of the square-wave. If at any time in the following
procedure the adjustments made are not working toward the desired
result, it is best to start over again by once again setting R318, R377,
R383 and R328 to maximum resistance.
Adjustment(s) ' Approx. Time Duration Adjustment made for.
(as measured from the
front leading corner)
C387 Maximum spike on
C316, C356
C318 and R318 10 to 50 nsec depend- A square leading
ing upon transistor front corner on the
waveform.
M7 844/264