TEKTRONIX MANUALS CHANGE INFORMATION
Da te: 9-2-83
Product: 492/492P Serv. Vol. I 1SN B030000 u p )
Manua1 Part No. : 070-3783-01
Change Reference: M46105 Revised
DESCRIPTION
EFF SN B053575 Product Group 26
TEXT CHANGES Revised 11-16-83
Calibration - Performance Check
Page 3-32, REPLACE the NOTE at the top of the page with the following:
NOTE
Because of deflection amplifier response» the
display amplitude will decrease at the high
frequency end.
The triggering signal can also be applied
directly from the sinewave generator to the
MARKER/VIDEO connector, if external video
is selected by connecting a jumper between
pins 1 and 5 of the ACCESSORIES connector.
Cal ibration - Adjustment Procedure
Page 3-47, REPLACE step 3b and 3c with the following:
b. Apply a 5 kHz. 0 to +4 V signal from the sinewave generator,
through a bnc cable to the MARKER/VIDEO input on the rear panel,
and connect pin 1 and pin 5 of the ACCESSORIES connector with
a pin-jack-to-pin-jack jumperwire.
c. Adjust Vert Gain, R1066 (Fig.3-23), for a full screen display
(0 to +4 V). Remove the 5 kHz signal from the MARKER/VIDEO input
and remove the jumperwire from the ACCESSORIES connector.
Calibration - Adjustment Procedure
Page*3-48, REPLACE step 4b with the following:
b. Apply 10 ms time marks from the time-mark generator to the
MARKER/VIDEO input, and connect pin 1 and pin 5 of the ACCESSORIES
connector with a pin-jack-to-pin-jack jumperwire. see Fig. 3-28.
Connect the Trigger Output of the time-mark generator to the
HORIZ/TRIG input on the rear panel of the 492/492P. This should
provide a display of 10 ms markers.
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