TB 9-6625-2071-24
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification.
This bulletin provides instructions for the
calibration of Digital Electronic Counter, AN/USM-459 (TS-3662/U) and Universal Counter,
Hewlett-Packard, Models 5328A( ), 5328AF096 and 5328A041-H69. TM 11-6625-2941-
14&P and 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
(1) Model 5328A may have the following options:
010
Oven Controlled Crystal Oscillator
011
IEEE-488 Interface
021
High Performance DVM
030
Channel C Frequency Measurement to 512 MHz
041
Programmable A and B Inputs
H60
Rear A and B Inputs
(2) Models 5328AF096, 5328A/H99, and 5328AMOD are equivalent to model 5328A
w/options 010, 011, 030, and 041.
(3) Models 5328AF096, 5328A/H99, and 5328AMOD are alike for calibration purposes.
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. Forms, records, and reports required for calibration
personnel at all levels are prescribed by TB 750-25.
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
Time base stability:
Frequency: 10 MHz
Aging rate (after 24 hr warm-up): <5 X 10-10/24 hours
Option 010, AN/USM-459, and 5328AF096
Line voltage stability (for 10% variation): <5 X 10-9
Channel A and B sensitivity:
25 mV rms:
Dc to 40 MHz (dc coupled)
20 Hz to 40 MHz (ac coupled)
50 mV rms:
40 to 100 MHz
AN/USM-459 and 5328AF096
15 mV rms:
Dc to 35 MHz (dc coupled)
20 Hz to 35 MHz (ac coupled)
50 mV rms:
35 to 100 MHz
Channel C sensitivity:
Option 030
15 mV rms:
5 to 512 MHz
AN/USM-459 and 5328AF096
15 mV rms:
30 to 500 MHz