External Z-Axis And Probe Adjust - Tektronix 2215A Instruction Manual

EXTERNAL Z-AXIS AND PROBE ADJUST

Equipment Required (see Table 4-1):
Leveled Sine-Wave Generator (Item 2)
Two 50-!) BNC Cables (Item 4)
50-fi BNC Termination (Item 5)
INITIAL CONTROL SETTINGS
Vertical
Channel 1 POSITION
VERTICAL MODE
BW LIMIT
CH 1 VOLTS/DIV
CH 1 VOLTS/DIV Variable
Channel 1 Input Coupling
Horizontal
POSITION
HORIZONTAL MODE
A SEC/DIV
SEC/DIV Variable
X I0 Magnifier
A TRIGGER
VAR HOLDOFF
Mode
SLOPE
LEVEL
A&B INT
A SOURCE
Midrange
CH 1
Off (button out)
1 V
CAL detent
DC
Midrange
A
20 >is
CAL detent
Off (knob in)
NORM
P-P AUTO
OUT
Midrange
VERT MODE
INT
Adjustment Procedure— 2215A Service
BNC T-Connector (Item 8)
10X Probe (provided with instrument)
PROCEDURE STEPS
1. Check External Z-Axis Operation
a. Connect the leveled sine-wave generator output via a
50-!! cable and a T-connector to the CH 1 OR X input con­
nector. Then connect a 50-Q cable and a 50-!! termination
from the T-connector to the EXT Z AXIS INPUT connector
on the rear panel.
b. Set the generator to produce a 5-V, 50-kHz signal.
c. CHECK— For noticeable intensity modulation. The
positive part of the sine wave should be of lower intensity
than the negative part.
d. Disconnect the test equipment from the instrument.
2. Check Probe Adjust Operation
a. Set:
CH 1 VOLTS/DIV
A SEC/DIV
b. Connect the 10X Probe to the CH 1 OR X input con­
nector and insert the probe tip into the PROBE ADJUST
jack 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
5-23