Horizontal System; Check/Adjust Sweep Timing; Check Sweep Magnifier Range - Tektronix 213 DMM Instruction Manual

Calibration-213 Service
C. HORIZONTAL SYSTEM
Equipment Required
1. Time-Mark Generator 6.
Attenuator, 5X
2. Sine-Wave Generator 7. Termination, Feedthrough
3. Screwdriver 8.
Cable
4.
Adapter, Probe 9. T -Connector
5. Adapter, Banana Plug (2 required)
For adjustments and test points (TP), see
ADJUSTMENT LOCATIONS
pullout page in the Diagrams section.
Control Settings
POWER
DMM
VOLTS
VOL TS-mA/DIV
SEC/DIV
INPUT COUPLING
INTENSITY
TRIGGER
LEVEL-SLOPE
VOLTS-mA/DIV VAR
HOR IZ MGF VAR
POS
ON
Button out
Button in
.5 (black scale)
. 1 m
DC
Minimum for a visible
display
INTL AC AUTO
As desired for a stable
sweep
Cal detent
Cal detent
As required for a visi-
ble display
1. CHECK/ADJUST SWEEP TIMING
a. Connect the probe to the Time-Mark Generator
(trigger output jack) with a probe adapter. Set the
generator for 0.1 ms markers.
6-10
b. CH ECK-1 marker/division within 0.4 division over
the center 8 divisions.
c. ADJUST-Sweep Cal, R312, for 1 marker/division
over the center 8 divisions.
d. Set the Time-Mark Generator, SEC/DIV, and VOL TS-
mA/DIV as shown in Table 6-4. The horizontal POS
control may need adjustment to align a timing mark
with a vertical graticule line .
e CH ECK-1 marker/division within 0.4 division over
the center 8 divisions.
f. Disconnect the Generator.
2. CHECK SWEEP MAGNIFIER RANGE
a. Set SEC/DIV at 1 m and the Time-Mark Generator
for 1 ms.
b. Rotate HOR IZ MGF VAR toward fully clockwise.
c. CHECK-HORIZ MGF VAR range for at least 5: 1
ratio (1 marker/5 divisions).
d. Return HOR IZ MGF VAR to CAL detent.
REV. A, JUNE, 1976