TB-9-6625-1968-35
IDENTIFICATION AND DESCRIPTION
1. Test Instrument
Identification.
This bulletin provides instructions for the
calibration of Function Generator SG-1133U (Hewlett-Packard, Model 3312A). 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.
Test instrument parameters
Performance specifications
Range:
0.1 Hz to 13 MHz
Accuracy: 5% FS
Sine wave distortion
Accuracy: 0.5 maximum from 10 Hz to 50 kHz
Modulation signal: 2% maximum, from 10 Hz to 10 kHz
Square wave output
Rise and fall time: Less than 18 ns at full rated output
Aberration tolerance: Less than 10%
Output characteristics
20 V p-p into open circuit
10 V p-p into 50 Ω
Attenuator
5% maximum
EQUIPMENT REQUIREMENT
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. 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 exceed the minimum use specifications
listed in table 2. The accuracies listed in table 2 provide a four-to-one ration between the
standard and TI. Where the four-to-one ratio cannot be met, the actual accuracy of the
equipment selected is shown in parenthesis.