Tektronix 442, Инструкция по эксплуатации

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c. ADJUST—X-Y Gain (R2062, see Figure 4-12) for
two dots spaced 5 divisions apart.
d. Set Channel 1 AC-GND-DC to DC.
Calibration Procedure—442 Service
Adjustment Procedure
e. CHECK—For two dots spaced 5 divisions apart ±5%
(4.75 to 5.25 divisions).
f. Disconnect the amplitude calibrator signal from the
442.
D. TRIGGERING
Equipment Required
Sine-Wave Generator (Item 3) Dual Input Coupler (Item 13)
50 f i BNC Terminations (Item 20, two required)
50
Q BNC Cable (Item 12)
Small Screwdriver (Item 18)
PROCEDURE
1. Internal Trigger DC Level, Composite Trigger DC
Level, and CH 2 DC Trigger Level
NOTE
Verify that Vertical Preamplifier Balance fsee B.
VERTICAL AMPLIFIER, Step 1) is correctly adjusted
before commencing the following Triggering ad­
justments.
If only a partial procedure is to be performed, refer to
Introduction and Preliminary Procedure at the
beginning of this Adjustment Procedure to prepare
the 442 for adjustment.
a. Set the 442 front panel controls as follows:
INTENSITY
For a visible
display
FOCUS
For a well-
defined trace
VOLTS/DIV (CH 1 & CH 2)
10 m (IX)
VOLTS/DIV VAR (CH 1 & CH 2)
Detent (fully cw)
AC-GND-DC (CH 1 & CH 2)
DC
VERT MODE
CH 1
SEC/DIV
10 p
SEC/DIV VAR
Detent (fully cw)
MAGNIFIER
XI (button out)
SOURCE
CH 1/CH 2
CPLG
AC (button out)
LEVEL
Midrange
(triggered sweep)
TRIGGERING MODE
AUTO
SLOPE
+ (button out)
HOLD OFF
Fully ccw
POSITION (all)
As required
REV A MAY 1980
4-25