TB 9-6625-2102-35
IDENTIFICATION AND DESCRIPTION
This bulletin provides instructions for the
calibration of Signal Generator, SG-1171/U (Wavetek, Model 148A W/Option 001). The
manufacturer's manual was used as the prime data source in compiling these instructions.
The equipment being calibrated will be referred to as the TI (test instrument) throughout
this bulletin.
a. Model Variations. None.
b. Time and Technique. The time required for this calibration is approximately 4
hours, using the dc and low frequency technique.
prescribed by TB 750-25.
b. Adjustments to be reported are designated (R) at the end of the sentence in which
they appear. When adjustments are in tables, the (R) follows the designated adjustment.
Report only those adjustments made and designated with (R).
pertain to this calibration, are listed in table 1.
Test instrument
parameters
Performance specifications
Modulation generator:
Range: 0.1 Hz to 100 kHz
<1%, 1 Hz to 10 kHz
Symmetry
<5%, 0.1 Hz to 100 kHz
<5%
Distortion
Main generator:
0.5% of X100 through X100K ranges (0.2 to 2.0 on dial)
Symmetry
5% on all other ranges (0.02 to 2.0 on dial)
<25 ns into 50 Ω
Risetime and falltime
Distortion
<0.5% on X100 to X10K ranges, <1% on X.01 to X10 and X100K ranges
Range: 0.0002 Hz to 20 MHz
Accuracy: (1% setting +1% full range) on X100 through X1M ranges
(2% setting +2% full range) on X.01 through X10 and X10M
ranges
Ac output
Range: 0 to 80 dB
Accuracy: 0.3 dB per 20 dB step at 2 kHz
Dc offset
At least 7.2 V dc
CHANGE 1
2
