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TEK 2225 - Page 61

TEK 2225
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Performance Check Procedure-2225 Service
EXTERNAL
Z-AXIS
AND PROBE ADJUST
Equipment Required (See Table
4-1):
Leveled Sine-Wave Generator (Item
2)
5042 BNC Termination (ItemlO)
Two 504 BNC Coaxial Cable (Item
8)
1 OX Probe (provided with instrument)
Dual-Input Coupler (Item
9)
Low-Reactance Alignment Tool (Item 15)
INITIAL CONTROL SETTINGS
Vertical
CH
1
POSITION Midrange
MODE CH 1, NORM
CH 1
VOLTSIDIV 1 V
CH 1
VOLTSIDIV Variable CAL detent
Magnification
Xl (CH 1 CAL
knob in)
Channel 1 AC-GND-DC DC
Horizontal
POSITION (COARSE and FINE) Midrange
Horizontal MODE
XI
SECIDIV 20 ps
SECIDIV Variable CAL detent
Trigger
SLOPE
LEVEL
MODE
HOLDOFF
SOURCE
COUPLING
PROCEDURE STEPS
Positive
(s)
Midrange
P-P AUTO
MIN
EXT,
EXT=Z
DC
1.
Check External 2-Axis Operation
a. Connect the leveled sine-wave generator out-
put via a
50-0 BNC coaxial cable, a 504 BNC
termination, and a dual-input coupler to the CH 1
OR
X and the EXT INPUT
OR
Z
connectors.
b. Set the generator to produce a 5-V, 50-kHz
signal.
NOTE
The INTENSITY level may need adjustment to
view the intensity modulation on the displayed
waveform.
c.
CHECK-For noticeable intensity modulation.
The positive part of the sine wave should be of lower
intensity than the negative part.
I
d. Disconnect the test equipment from the
instrument.
2.
Check Probe Adjust Operation
l
a.
SET:
I
CH 1 VOLTSIDIV
SECIDIV
Trigger SOURCE
b. Connect the 1
OX Probe to the CH
1
OR
X input
connector and clip the probe tip to the PROBE
connector 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.
Scans
by
ARTEK
MEDU
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