TB 9-6625-132-24
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification.
This bulletin provides instructions for the
calibration of Function Generator Tektronix, Model FG501A. 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 2
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.
Table 1. Calibration Description
Test instrument parameters
Performance specifications
Range:
0.002 Hz to 2 MHz
Accuracy: 3% of FS (20 to 2 on dial)
Output Amplitude
Range:
30 V p-p open circuit
15 V p-p into 50 Ω
Accuracy: min
Attenuator
Range:
0 to 60 dB
Accuracy: 1 dB
Amplitude Flatness
Range:
20 Hz to 2 MHz
Sinewave (10 kHz Ref)
Accuracy: 0.1 dB, 20 Hz to 20 kHz
0.5 dB, 20kHz to 1 MHz
1 dB, 1 to 2 MHz
Triangle (10 kHz Ref)
Range:
20 Hz to 2 MHz
Accuracy: 0.5 dB, 20 Hz to 200 kHz
2 dB, 200kHz to 2 MHz
Squarewave (10kHz Ref)
Range:
20 Hz to 2 MHz
Accuracy: 0.5 dB
Sinewave Distortion
Range:
20 Hz to 2 MHz
≤0.25%, 20 Hz to 20 kHz on 103 range and below
Accuracy:
≤0.5%, 20 kHz to 100 kHz
≤-30 dBc, 100 kHz to 2 MHz
15 V p-p into 50 Ω
Squarewave and Pulse Output
Range:
≤25 ns (Atten in 0 dB)
Accuracy:
Rise Time and Fall Time
