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5-1
3.
Allow the unit to warm up at least 2 hours for final
calibration. Keepthe instrument covers on to main-
tain heat. Removecovers only to make adjustments
or measurements.
2. Start the calibration
by removing covers as
described in paragraph 5.3, connecting the unit to
an ac source and setting these front panel switches
as follows:
SYM.
.
.
.
.
.
.
.
.
. .
.
.
.
Off (extended)
TRIG
LEVEL.
. .
.
.
.
12 o'clock
DC OFFSET
Off (extended)
OUTPUT ADEN
0 dB (all extended)
AUX GEN MODE
SET FREQ/AUXGEN OFF
WARNING
With the covers removed, dangerous voltage
points may be exposed. Contact with any of
these
points
could cause serious injury or
death.
1. All measurementsmade at the FUNCTIONOUTcon-
nector must beterminated into a 50Q( ± 1.0%) load.
Instrument specifications are given in Sec-
tion
1
of this manual.
CALIBRA TION LIMITS AND
TOLERANCES ARE NOT
INSTRUMENT SPECIFICA TIONS
NOTE
Thecompletion of the calibration procedure
returns the instrument to correct alignment.
board calibration
points while figure 5-2 shows
sweep/mod board calibration points.
SECTION
5
CALIBRATION
5.4
CALIBRATION
After referring to the following preliminary data, perform
calibration, as necessary, per table 5-1,5-2. If perform-
ing partial calibration, check previous settings and
adjustmentsfor applicability. Figure5-1showsgenerator
NOTE
Remove the cover only when it is necessary
to make adjustments or measurements.
Invert the instrument and remove the four screws in the
bottom cover. Remove the bottom cover.
NOTE
Before removing the covers, disconnect the
instrument from the
ac
power source.
5.3
COVER REMOVAL
Voltmeter.
.
.
.
.
.
Millivolt dc measurement
(1% accuracy), true rms
Oscilloscope, Dual Channel .... 100 MHz bandwidth
Counter
20 MHz (0.01% accuracy)
50Q. . . . . .
.
.
.
.
.
. ± 1.0% accuracy, 2W
Distortion Analyzer
To 200 kHz
RG58U Coax
Cable.
.3 ft length BNC male contacts
Spectrum
Analyzer..
.
To 20 MHz
5.2
REQUIRED TEST EQUIPMENT
Wavetek maintains a factory department for those
cusstomers not possessingthe necessary personnel or
test equipment to maintain the instrument. If an
instrument is returned to the factory for calibration or
repair, a detailed description of the specific problem
should be attached to minimize turnaround time.
5.1
FACTORY REPAIR
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Troubleshooting
