Tektronix 213 DMM Instruction Manual page 74

Calibration-213 Service
b. Connect the probe to the Amplitude Calibrator with
a probe adapter. Set the Calibrator for an output of
0.1
Vat
1
kHz and adjust for a stable display.
c. CHECK-Vertical deflection of 5 divisions± 0.25
division (4.75 to 5.25 div).
d. ADJUST-VERT GAIN, R132, for 5 divisions of
deflection.
e. Set VOL TS-mA/DIV and Calibrator as shown in
Table 6-3.
f. CHECK-Vertical deflection accuracy is within limits
shown in Table 6-3.
TABLE 6-3
Vertical Deflection Accuracy
VOL TS-mA/DIV Amplitude
Deflection
Limits
Setting Calibrator
(Divisions)
(Divisions)
(black scale)
Setting
10m 50 mV 5 4.85 to 5.15
. 5 2V 4 3.88 to 4.12
2 10 V 5
4.85to5.15
20 100 V 5 4.85 to 5.15
4. CHECK VOLTS-mA/DIV VAR RANGE
a. Set VOL TS-mA/DIV to 20 m (black scale).
b. Set the Amplitude Calibrator for an output of 0.1 V
at 1 kHz.
c. Rotate the VOL TS-mA/DIV VAR control toward a
fully counterclockwise position.
d. CHECK-VOL TS-mA/DIV VAR range for at least a
2.5: 1 ratio (vertical deflection is reduced to two divisions
or less).
e. Reset VOLTS-mA/DIV VAR to its calibrated detent.
5. CHECK/ADJUST ATTENUATOR COMPENSATION
a. Set: VOL TS-mA/DIV
SEC/DIV
INPUT COUPLING
6-8
.2 (black scale)
.2m
DC
b. Set the Amplitude Calibrator for 1 Vat 1 kHz and
adjust the 213 for a stable display.
c. CHECK-Crt display for a flat-top waveform.
d. ADJUST-10X compensator.capacitor C108 (middle
unmarked hole in side panel) for the best flat-top wave-
form.
e. Set VOL TS-mA/DIV to 2 (black scale).
f. Set the Calibrator output to 10 V.
g. CHECK-Crt display for a flat-top waveform.
h. ADJUST -100X compensator capacitor C104 (top
unmarked hole in side panel) for the best flat-top wave-
form.
i. Set VOL TS-mA/DIV to 20 (black scale).
j. Set the Calibrator output to 100 V.
k. CHECK-Crt display for a flat-top waveform .
I. ADJUST-1000X compensator capacitor, C112
(bottom unmarked hole in side panel) for the best
flat-top waveform.
m. Disconnect the Calibrator.
6. CHECK BANDWIDTH
a. Set: VOL TS-mA/DIV
SEC/DIV
5 m (black scale)
.5m
b. Connect the probe to the Sine-Wave Generator with
a dual banana-plug to BNC adapter, 5X attenuator, 50
n
feedthrough terminator, and a probe adapter. Set
the Generator frequency to 10 kHz and its output am-
plitude for a 6 division crt display.
c. Set the Generator frequency to 400 kHz.
d. CHECK-Vertical deflection is at least 4.2 divisions.
e. Remove the 5X attenuator and 50Q terminator from
the Generator and reconnect the probe to the Generator
with the probe adapter.
REV. A , JUNE, 1976