TB 9-6625-2188-35
IDENTIFICATION AND DESCRIPTION
1. Test Instrument
Identification.
This bulletin provides instructions for the
The
manufacturers' manuals were used as the prime data sources in compiling these
instructions. The equipment being calibrated will be referred to as the TI (test instrument)
throughout this bulletin.
a. Model Variations.
Variations among models are described in test, tables, and
figures.
b. Time and Technique. The time required for this calibration is approximately 4
hours, using the dc and low frequency technique.
2. Forms,
Records, and
Reports
a. Forms, records, and
reports required for calibration personnel at all
levels are
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).
3. Calibration
Description. TI
parameters and
performance specifications which
pertain to this calibration are listed in table 1.
Test instrument parameters
Performance specifications
Distortion
20 Hz to 20 kHz: <0.0008% (-102 dB) THD
10 to 20 Hz and 20 to 50 kHz: <0.0018% (-95 dB) THD
(RL >600 Ω)
50 to 100 kHz: <0.0032% (-90 dB) THD
Flatness:
(1 kHz reference)
Range: 10 Hz to 20 kHz
0.1 dB
Accuracy:
Range: 10 Hz to 100 kHz
3% of setting
Accuracy:
>l% of setting
Vernier:
Output level
Range: +10 to -60 dBm into 600Ω
0.2 dB at 0 dBm and 1 kHz
Accuracy:
Step accuracy: 0.1 dB/10 dB step