Tektronix 2230 Service Manual

Performance Check Procedure—2230 Service
EXTERNAL Z-AXIS, PROBE ADJUST,
EXTERNAL CLOCK, AND X-Y PLOTTER
Equipment Required (see Table 4-1):
Leveled Sine-Wave Generator (Item 2)
BNC T-Connector (Item 11)
Pulse Generator (Item 5)
50 Q BNC Termination (Item 12)
Digital Voltmeter (Item 7) BNC Male-to-Tip Plug (Item 17)
Two 50 0 BNC Cables (Item 8)
10X Probe (provided with instrument)
INITIAL CONTROL SETTINGS
VERTICAL
Channel 1 POSITION Midrange
VERTICAL MODE CH 1
X-Y Off (button out)
BW LIMIT Off (button out)
CH 1 VOLTS/DIV
1 V
CH 1 VOLTS/DIV Variable CAL detent
Channel 1 AC-GND-DC
DC
Horizontal
POSITION Midrange
HORIZONTAL MODE
A
A SEC/DIV
20 ns
SEC/DIV Variable CAL detent
X I0 Magnifier Off (knob in)
A TRIGGER
VAR HOLDOFF NORM
Mode
P-P AUTO
SLOPE
OUT
LEVEL
Midrange
HF REJECT
OFF
A&B INT VERT MODE
A SOURCE
INT
Storage
STORE/NON STORE
NON STORE (button out)
SAVE/CONTINUE
CONTINUE (button out)
PRETRIG/POST TRIG POST TRIG (button out)
ROLL/SCAN SCAN (button out)
1K/4K
4K (button out)
POSITION CURS/
POSITION CURS
SELECT WAVEFORM (button in)
WAVEFORM REFERENCE/
WAVEFORM REFERENCE
MENU SELECT
(button in)
PROCEDURE STEPS
1. Check External Z-Axis Operation
a. Connect the leveled sine-wave generator output via
a 50 0 cable and a T-connector to the CH 1 OR X input
connector. Then connect a 50 Q cable and a 50 Q termina
tion from the T-connector to the EXT Z-AXIS INPUT con
nector 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 10 mV
A SEC/DIV 0.5 ms
b. Connect the 10X Probe to the CH 1 OR X input
connector 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.
4-21

Tektronix 2230 Specifications

General

Brand	Tektronix
Model	2230
Category	Test Equipment
Language	English