External Z-Axis And Probe Adjust; External Z-Axis And Probe Adjust; Initial Control Settings; Procedure Steps - Tektronix 2205 Service Manual

Performance Check Procedure—2205 Service

EXTERNAL Z-AXIS AND PROBE ADJUST

Equipment Required (See Table 4 -1 ):
Calibration Generator (Item 2)
Two 50-X1 Coaxial Cable (Item 6)
Dual-Input Coupler (Item 7)

INITIAL CONTROL SETTINGS

Vertical
CH 1 POSITION
MODE
CH 1 VOLTS/DIV
CH 1 VOLTS/DIV Variable
Channel 1 AC-GND-DC
Horizontal
POSITION
MAG
SEC/DIV
SEC/DIV Variable
Trigger
SLOPE
LEVEL
MODE
SOURCE

PROCEDURE STEPS

1.

Check External Z-Axis Operation

a. Connect a 5-V standard-amplitude signal
from the calibration generator via dual-input coupler
to the CH 1 OR X and EXT INPUT OR Z connectors.
4-12
Midrange
CH 1, NORM
1 V
b. CHECK—For noticeable intensity modulation.
CAL detent
The positive part of the sine wave should be of lower
DC
intensity than the negative part.
c. Disconnect the test equipment from the
instrument.
Midrange
XI
20 ms

2. Check Probe Adjust Operation

CAL detent
a. Set:
Positive (-O
Midrange
P-P AUTO
EXT, EXT=Z
b. Connect the 10X Probe to the CH 1
connector and clip the probe tip to the PROBE con­
nector on the instrument front panel. If necessary,
adjust the probe compensation for a flat-topped
square-wave display.
c. CHECK—Display amplitude is 4.75 to 5.25
divisions.
d. Disconnect the probe from the instrument.
5 0 -n Termination (Item 8)
10X Probe (Item 12)
NOTE
The INTENSITY level may need adjustment to
view the intensity modulation on the dis­
played waveform.
CH 1 VOLTS/DIV
SEC/DIV
Trigger SOURCE
10 mV
0.5 ms
CH 1
X input
OR