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

EXTERNAL Z-AXIS AND PROBE ADJUST

Equipment Required (See Table 4-1):
Calibration Generator (Item 1)
Two 5 0 -fl Coaxial Cables (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 Z-Axis
External
a. Connect a 5-V standard-amplitude signal from
the calibration generator via dual-input coupler to
the CH 1 oft X and EXT INPUT
Midrange
CH 1, NORM
1 V
CAL detent
DC
Midrange
XI
20 ms
CAL detent
Positive {~ r)
Midrange
AUTO
P - P
EXT. EXT=Z
Operation
Z connectors.
o r
Adjustment Procedure—2205 Service
5 0 -fi Termination (Item 8)
10X Probe (Item 12)
NOTE
The INTENSITY level may need adjustment to
view the Intensity modulation on the dis­
played waveform.
b. CHECK—For noticeable intensity modulation.
The positive part of the sine wave should be of lower
intensity than the negative part.
c. Disconnect the test equipment from the
instrument.

2. Check Probe Adjust Operation

a. Set:
CH 1 VOLTS/DIV
SEC/DIV
Trigger SOURCE
b. Connect the 10X Probe to the CH 1 OR X input
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.
10 mV
0.5 ms
CH 1
5-19