Check Internal Trigger; Check External Trigger - Tektronix 213 DMM Instruction Manual

Performance Check-213 Service
SEC/DIV
Time-Mark
Setting
Generator
Setting
2µ
1 µs
.5m 0.2 ms
5µ
1
µs
.5
m 0.1 ms
TABLE 5-3
Sweep Linearity
VOLTS-mA/DIV
Setting
(black scale)
.1
.5
.1
.5
HORIZ MGF VAR
Setting
1
CAL detent
CAL detent
Set fully clock-
wise. Then adjust
counterclockwise
to 1 marker/divi-
sion
Set fully clock-
wise. Then adjust
counterclockwise
to 1 marker/divi-
sion.
1
The horizontal POS control may need adjustment to align a timing
mark with a vertical graticule line.
c. Return HOR IZ MGF VAR to the CAL detent.
d. Disconnect the Generator.
4. CHECK INTERNAL TRIGGER
a. Set: VOL TS-mA/DIV
SEC/DIV
INPUT COUPLING
TRIGGER
HORIZ MGF
1 (black scale)
.5
m
DC
INTL AC AUTO
CAL detent
b. Connect the probe to the Sine-Wave Generator with a
dual banana-plug to BNC adapter and a probe adapter.
Set the Generator frequency to 1 kHz and adjust the out-
put amplitude for a
0.5
division display.
c. CH ECK-Sweep triggers at some point on both the
positive and negative slope of the LEVEL-SLOPE con-
trol, and free-runs when not triggered.
d. Set TRIGGER to INTL AC NORM.
5-6
e. CHECK-Sweep triggers at some point on both the
positive and negative slope of the LEVEL-SLOPE con-
trol, and there is no sweep when not triggered.
f. Set TRIGGER to INTL AC AUTO and SEC/DIV to
2
µ.
g. Set the Generator to 1 MHz with an output ampli-
tude of
0.5
division.
h. Repeat steps c through e.
i. Disconnect the Generator.
5. CHECK EXTERNAL TRIGGER
a. Set: VOLTS-mA/DIV
SEC/DIV
TRIGGER
.5
.5
m
INTL AC AUTO
b. Connect the Sine-Wave Generator to EXT TRIG and
the probe using two dual banana-plug to BNC adapters,
a T-Connector, a probe adapter, and a cable. Set the
Generator to
1
kHz and adjust the output amplitude
for a 2 division display ( 1 V p-p).
c. Set TRIGGER to EXT DC.
d. CHECK-Sweep will trigger at some point on both
the positive and negative slope of the LEVEL-SLOPE
control (there is no trace when not triggered).
e. Set TRIGGER to INTL AC AUTO and SEC/DIV to
2µ.
f. Set the Generator to 1 MHz and adjust the output
amplitude for a 2 division display (1 V p-p).
g. Repeat steps c and d.
h. Disconnect the Generator.
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