TB 9-6625-2188-24
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification.
This bulletin provides instructions for the
calibration of Oscillator, Tektronix, Types SG505 and SG505 Option 01.
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
20 Hz to 20 kHz: <0.0008% (-102 dB) THD
Distortion
(RL >600 )
10 to 20 Hz and 20 to 50 kHz: <0.0018% (-95 dB) THD
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:
A
Output level
Range: +10 to -60 dBm into 600
0.2 dB at 0 dBm and 1 kHz
ccuracy:
0.1 dB/10 dB step
Step accuracy:
EQUIPMENT REQUIREMENTS
4. Equipment Required. Table 2 identifies the specific equipment to be used in this
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Set AN/GSM-286, AN/GSM-287, or AN/GSM-705. Alternate items may be used
by the calibrating activity. The items selected must be verified to perform satisfactorily
prior to use and must bear evidence of current calibration. The equipment must meet or