HP 5232a schematic
*TB 9-6625-080-50
DEPARTMENT OF THE ARMY TECHNICAL BULLETIN
CALIBRATION PROCEDURE FOR
ELECTRONIC COUNTER
HEWLETT-PACKARD, MODELS
5232A (CP-798/G) AND 5532A
Headquarters, Department of the Army, Washington, DC
3 September 1969
♦♦REPORTING OF ERRORS♦♦
You can help improve this publication by calling attention to errors and by
recommending improvements and stating your reasons for the recommendations.
Your letter or DA Form 2028, Recommended Changes to Publications, should be
mailed directly to Commander, U. S. Army Aviation and Missile Command,
ATTN: AMSAM-TMD-EP, Redstone Arsenal, AL 35898-5000. FAX to DSN 7882313 (commercial 256-842-2313). A reply will be mailed directly to you.
SECTION I. GENERAL
Purpose and scope................................................ 1 2
Descriptive data................................................... 2 2
General instructions............................................. 3 3
Differences among models.................................... 4 4
II. CALIBRATION
Equipment and accessories required ................... 5 3
Preliminary procedure ......................................... 6 4
Oscillator frequency and stability........................ 7 5
Self-check ............................................................. 8 6
Input sensitivity................................................... 9 6
Time base external input ..................................... 10 8
Power supply........................................................ 11 8
Final procedure.................................................... 12 9
III. SPECIFIC ITEM IDENTIFICATION
Identification........................................................ 13 9
Secondary transfer calibration standards set...... 14 9
__________
*This bulletin supersedes TB 9-6625-080-50, 20 December 1966.
Paragraph Page
SECTION I
GENERAL
1. Purpose and Scope. This bulletin provides information for the periodic calibration of
electronic counter, Hewlett-Packard Models 5232A (CP-798/G) and 5532A. It is to be used
by personnel trained and qualified in the use of calibration equipment.
2. Descriptive Data
a. Identification
Nomenclature ELECTRONIC COUNTER
Military designation CP-798/G (Model 5232A)
Manufacturer Hewlett-Packard
Model numbers 5232A and 5532A
Reference Manufacturer’s instrumentation manual.
b. Specifications
Power input requirements 115 or 230 v ±10%, 50 to 60 Hz, 40 w.
Frequency measurement:
Sensitivity 0.1 v rms sine wave
Range 2 Hz to 1.2 MHz
Accuracy ±1 count, ± time base accuracy
Gate time 0.01,0.1, and 10 sec
Period measurement:
Sensitivity
Range 2 Hz to 10 kHz in 1 period, 2 Hz to 1.2 MHz in 100-period
Accuracy
Time base:
Output frequency 1 MHz
Amplitude
Stability 2 parts in 107 /month
External input 1 v rms into 500 ohms, 100 Hz to 1.2 MHz.
Ratio and multiple ratio:
Range
Reads (f1/ f2) x period multiplier
Accuracy
1
0.1 v rms sine wave
average and above.
2
±1 count, ± time base accuracy, ± trigger error/period
averaged.
1
1
Greater than 3 v pp into 1000 ohms.
f1: 100 Hz to 1.2 MHz at 1 v rms into 500 ohms
f2: 2 Hz to 1.2 MHz
2
±1 count of f
± trigger error of f2/period multiplier.
1,
c. Calibration
Time required 2 hr (approx.)
Technique Dc and low frequency
1
This specification is for information only and is not necessarily verified in this procedure.
2
Trigger error for 0.1 v rms sine wave input is 0.3% for signal with 40-db signal-to-noise ratio. Trigger error
decreases with increased signal amplitude and slope.
3. General Instructions
a. DA Form 2416 (Calibration Data Card). During the use of this bulletin,
annotate DA Form 2416 in accordance with TM 38-750 for only those parameters which
have an annotation note in the performance checks.
b. Unit Under Test. Electronic counter, Hewlett-Packard Models 5232A (CP-798/G)
and 5532A, will be referred to as the UUT (unit under test) throughout this bulletin.
c. Equipment and Accessory Identification. The equipment and accessories
referred to throughout this bulletin are identified in tables 1 and 2 and section III.
d. Equipment Setup. Disconnect instructions are not contained in this bulletin.
e. Power Supply. When indications specified in paragraphs 8 through 11 are not
within tolerance, perform the power supply check prior to making adjustments. After
power supply adjustments are made, repeat paragraphs 8 through 11. Do not perform the
power supply check if all other parameters are within tolerance.
4. Differences Among Models. Model 5232A CP-798/G displays measurements on six-
place neon column readouts. Model 5532A displays measurements on six-place in-line
Nixie readouts.
SECTION II
CALIBRATION
5. Equipment and Accessories Required. Table 1 lists minimum use specifications of
equipment required for calibration performance checks and adjustments. Table 2 lists
required accessories. Tables 1 and 2 are provided to assist in the selection of required
equipment and accessories. For specific item identification, refer to section III.
Table 1. Minimum Specifications of Equipment Required
Item number Common name Minimum use specifications
A1 TEST OSCILLATOR RANGE: 10 Hz to 1.2 MHz
A2 DC VOLTMETER RANGE: 0 to 160 vdc
ACCURACY: ±0.8%
A3 RECEIVER RANGE: 1 MHz
ACCURACY: 1 part in 10
A4 AUTOTRANSFORMER RANGE: 105 to 125 vac
ACCURACY: ±1%
A5 AC VOLTMETER RANGE: 0 to 1 v rms
ACCURACY: ±2%
-7
Table 2. Accessories Required
Item number Common name Description
B1 ADAPTER 600-ohm double banana jack to 50-ohm BNC jack
B2 ADAPTER BNC jack to UHF plug
B3 ADAPTER BNC T type; 2 jacks, 1 plug
B4 CABLE 30-in., RG-58()/U; BNC plug terminations
6. Preliminary Procedure
NOTE
Personnel should familiarize themselves with the entire
bulletin prior to performing calibration.
a. Remove top and bottom cover from UUT. Use extender board (supplied with UUT)
as necessary in making adjustments.
b. Connect UUT to autotransformer (A4, table 1).
c. Connect autotransformer to 115-volt ac source and adjust controls of
autotransformer for 115 volts ac.
d. Position UUT controls as listed in (1) through (5) below:
(1) STD switch (rear panel) to INT.
(2) STORAGE switch (rear panel) to STORAGE.
(3) Power switch to ON.
(4) DISPLAY control fully counterclockwise.
(5) SENSITIVITY switch to .1.
e. Allow 1 hour for equipment to warm up and stabilize.
NOTE
When the UUT is not within tolerance, perform the specified
adjustment and continue the performance check. When the
UUT is not within tolerance and no adjustment is specified, the
deficiency must be corrected before continuing with the
procedure.
WARNING
HIGH VOLTAGE is used during the performance of this
procedure. DEATH ON CONTACT may result if personnel fail
to observe safety precautions.
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