Hp Fish Finder 5345A Users Manual Pdc35

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__________

This bulletin supersedes TB 9-6625-1996-35, dated 13 November 1985.

*TB 9-6625-1996-35

DEPARTMENT OF THE ARMY TECHNICAL BULLETIN

CALIBRATION PROCEDURE FOR

FREQUENCY COUNTER

HEWLETT-PACKARD

MODELS 5345A, 5345A/E28 AND 5345AOPT12

Headquarters, Department of the Army, Washington, DC

25 June 2001

Approved for public release; distribution is unlimited

REPORTING OF ERRORS AND RECOMMENDED IMPROVEMENTS

You can help improve this publication. If you find any mistakes or if you know of a

way to improve the procedure, please let us know. Mail your letter or DA Form 2028

to: Commander, U. S. Army Aviation and Missile Command, ATTN: AMSAM-MMC-

MA-NP, Redstone Arsenal, AL 35898-5230. A reply will be furnished to you. You may

also send in your comments electronically to our e-mail address:

2028@redstone.army.mil or FAX 256-842-6546/DSN 788-6546.

SECTION I. IDENTIFICATION AND DESCRIPTION Paragraph Page

Test instrument identification............................ 1 2

Forms, records, and reports............................... 2 2

Calibration description....................................... 3 2

II. EQUIPMENT IDENTIFICATION

Equipment required........................................... 4 3

Accessories required.......................................... 5 3

III. CALIBRATION PROCESS

Preliminary instructions.................................... 6 4

Equipment setup................................................ 7 4

Time base stability............................................. 8 5

Sensitivity.......................................................... 9 6

A12 Interface I/O................................................ 10 8

Power supply ..................................................... 11 9

Final procedure.................................................. 12 12

TB 9-6625-1996-35

2

SECTION I

IDENTIFICATION AND DESCRIPTION

1. Test Instrument Identification. This bulletin provides instructions for the

calibration of Frequency Counter, Hewlett-Packard, Models 5345A, 5345A/E28 and

5345AOPT12. The manufacturer's 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. Differences among models are listed within the text.

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 applications which

pertain to this calibration are in table 1.

Table 1. Calibration Description

Test instrument parameters Performance specifications

Time base:

Frequency: 10 MHz

Aging rate (after 24 hour warmup): < 5 x 10-10 per day

Line voltage variation

(for 10% variation): <1 x 10-10 15 minutes after change

Channel A and B sensitivity: Separate inputs:

25 mV rms: dc to 500 MHz (dc coupled)

Common inputs:

50 mV rms: dc to 400 MHz (dc coupled)

A12 interface I/O Range: -2 to +2 V dc

Accuracy: ±0.0005 V dc

TB 9-6625-1996-35

3

SECTION II

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-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

exceed the minimum use specifications listed in table 2. The accuracies listed in table 2

provide a four-to-one ratio between the standard and TI.

5. Accessories Required. The accessories required for this calibration are common

usage accessories, issued as indicated in paragraph 4 above, and are not listed in this

calibration procedure. The following peculiar accessories are also required for this

calibration: Adapter, SMC jack to BNC plug, Hewlett-Packard Model 1250-0831;

Extender Boards, 10-terminal circuit board extenders (05345-60201 and 05345-60202);

and Extender Cable, Hewlett-Packard Model 05345-60205.

Table 2. Minimum Specifications of Equipment Required

Common name

Minimum use specifications Manufacturer and model

(part number)

AUTOTRANSFORMER Range: 105 to 125 V ac

Accuracy: ±1%

General Radio, Type

W10MT3AS3 (7910809) or

Ridge, Model 9020A (9020A)

or Ridge, Model 9020F (9020F)

FUNCTION GENERATOR Range: 10 Hz to 30 MHz

Amplitude: 0 to 40 mV rms

Accuracy: ±3% (±1.5 dB)

(SG-1288/G)

FREQUENCY DIFFERENCE

METER

Range: 10 MHz

Resolution: 1 part in 10-10 per day

3.7 to 12.4 GHz, Hewlett-

Packard, Model 537A

(7910718-2)

MULTIMETER Range: -2 to +2 Vdc

Accuracy: ±0.000125%

Range: 0 to ± 15 V dc

Accuracy: ±0.03%

Hewlett-Packard, Model

3458A (3458A)

OSCILLOSCOPE Bandwidth: 100 MHz

Sensitivity: 50 mV/div

Sweep rate: 10 ns/div

Accuracy: ±3%

Tektronix, Type 2465BOPT46

(2465BOPT46)

SIGNAL GENERATOR Range: 30 to 500 MHz

Amplitude: 0 to 40 mV rms

Accuracy: ±3% (±1.5 dB)

(SG-1207/U)

TIME/FREQUENCY

WORKSTATION

Frequency: 10 MHz

Accuracy: 1.25 parts in 10-10 per day

Autek Systems Corp. Model

620 (MIS-38946)

TB 9-6625-1996-35

4

SECTION III

CALIBRATION PROCESS

6. Preliminary Instructions

a. The instruction outlined in paragraphs 6 and 7 are preparatory to the calibration

process. Personnel should become familiar with the entire bulletin before beginning the

calibration.

b. Items of equipment used in this procedure are referenced within the text by

common name as listed in table 2.

c. Unless otherwise specified, verify the result of each test and, whenever the test

requirement is not met, take corrective action before continuing with the calibration.

Adjustments required to calibrate the TI are included in this procedure. Additional

maintenance information is contained in the manufacturer's manual for this TI.

d. Unless otherwise specified, all controls and control settings refer to the TI.

7. Equipment Setup

WARNING

HIGH VOLTAGE is used or exposed during the performance

of this calibration. DEATH ON CONTACT may result if

personnel fail to observe safety precautions. REDUCE

OUTPUT(S) to minimum after each step within the

performance check where applicable.

a. Remove protective cover from TI only when necessary to make adjustments.

Replace cover after completing the adjustments.

b. Connect TI rear panel DIGITAL BUS 1.0 LOAD to controller GPIB0 (opt 12

only).

c. Connect TI to autotransformer, connect autotransformer to a 115 V ac source and

adjust for 115 V ac output.

d. Set POWER switch to ON and allow at least 1 hour for stabilization. If TI has

been disconnected from line power for more than 24 hours, allow at least 24 hours for

warmup before beginning calibration.

e. Set TI rear panel INT STD/EXT STD switch to INT STD and INTERNAL/EXT

ARM/EXT GATE switch to INTERNAL (OPT 12 only).

f. Position controls as listed in (1) through (10) below:

(1) FUNCTION switch to FREQ A.

(2) GATE TIME switch to 100 ms.

(3) DISPLAY POSITION switch to AUTO.

TB 9-6625-1996-35

5

(4) SAMPLE RATE control fully ccw.

(5) CHANNEL A and B LEVEL controls to PRESET.

(6) CHANNEL A and B SLOPE switches to + (positive).

(7) CHANNEL A and B input impedance switches to 50 Ω.

(8) CHANNEL A and B ATTEN switches to X1.

(9) CHANNEL A and B AC-DC switches to DC.

(10) CHECK-COM A-SEP switch to SEP.

8. Time Base Stability

a. Performance Check

(1) Connect time/frequency workstation OUTPUT 1 MHz to frequency difference

meter REF INPUT.

(2) Connect TI FREQ STD OUTPUT 10 MHz (rear panel) to frequency

difference meter SIG INPUT.

(3) Adjust A18 FREQ ADJ (fig. 1) for minimum difference indication on frequency

difference meter.

Figure 1. Test instrument - top view.

(4) Allow at least 24 hours for stabilization. Frequency difference meter

indication will remain within 5 parts in 10-10.

(5) Adjust autotransformer output to 105 V and allow 15 minutes for

stabilization. Verify that TI oscillator drift is less than 1 part in 10-10.

(6) Adjust autotransformer output to 125 V and allow 15 minutes for

stabilization. Verify that TI oscillator drift is less than 1 part in 10-10 .

(7) Adjust autotransformer output to 115 V.

b. Adjustments. No further adjustments can be made.

TB 9-6625-1996-35

6

9. Sensitivity

a. Performance Check

(1) Set function generator as listed in (a) through (c) below:

(a) Output Type to UnBalanced 600

(b) Function to Sine Wave.

(b) Frequency to 10 Hz.

(c) Amplitude to 1 mV.

(2) Position TI controls as listed in (a) through (f) below:

(a) CHANNEL A LEVEL control to PRESET.

(b) CHANNEL A SLOPE switch to +.

(c) CHANNEL A 50Ω/1MΩ switch to 50Ω.

(d) CHANNEL A ATTEN X1/X10 switch to X1.

(e) CHANNEL A AC/DC switch to DC.

(f) CHECK/COM A/SEP switch to SEP.

(3) Connect TI CHANNEL A input to function generator Function Output

Unbalanced.

(4) Press the function generator Enter key to enable the knob, and slowly rotate

the function generator knob cw until TI display GATE light flashes and indication is

stable at approximately 10 Hz.

(5) Verify that the function generator indicates within limits specified in table 3.

If not perform b below.

(6) Repeat technique of 1 through (5) above for remaining settings listed in table

3.

Table 3. Sensitivity

Test

instrument

input

CHECK-COM

A-SEP switch

setting

Function generator/signal

generator frequency

setting

Function generator/signal

generator indications

(≤)

CHANNEL A SEP 10 Hz 0.071 VPP

CHANNEL A SEP 10 kHz 0.071 VPP

CHANNEL A SEP 100 kHz 0.071 VPP

CHANNEL A SEP 1 MHz 0.071 VPP

CHANNEL A1 SEP 10 MHz 0.025 VRMS

CHANNEL A SEP 100 MHz 0.025 VRMS

CHANNEL A SEP 500 MHz 0.025 VRMS

CHANNEL A2 COM A 10 Hz 0.141 VPP

CHANNEL A COM A 10 kHz 0.141 VPP

CHANNEL A COM A 100 kHz 0.141 VPP

CHANNEL A COM A 1 MHz 0.141 VPP

CHANNEL A1 COM A 10 MHz 0.050 VRMS

CHANNEL A COM A 100 MHz 0.050 VRMS

CHANNEL A COM A 400 MHz 0.050 VRMS

1Substitute the signal generator for the function generator.

Substitute the function generator for the signal generator.

2

TB 9-6625-1996-35

b. Adjustments

(1) Substitute signal generator for function generator.

(2) Connect signal generator RF OUTPUT connector to TI CHANNEL A input.

(3) Connect signal generator EXT REF INPUT connector (rear panel) to TI

FREQ STD OUTPUT 10 MHz connector (rear panel).

(4) Extend front panel display assembly using extender cable 05345-60205.

Disconnect CHAN A P1 caple from A9 J1 CHA (CHAN B P2 cable to A9 J2 CH B for

CHANNEL B) and connect A9 J1 CH A (A9 J2 CH B for CHANNEL B) to oscilloscope

CHANNEL A.

(5) Position TI CHANNEL A and CHANNEL B controls as listed in (a) through

(f) below:

(a) LEVEL control to PRESET.

(b) SLOPE switch to +.

(c) IMPEDANCE switch to 50Ω.

(d) ATTEN switch to X1.

(e) COUPLING switch to DC.

(f) CHECK-COM A-SEP switch to SEP.

(6) Set signal generator frequency to 100 MHz and amplitude to 25 mV.

(7) Position oscilloscope controls as listed in (a) through (f) below:

(a) CH1 VOLTS/DIV switch to .2 V.

(b) SEC/DIV switch to 20 ns.

(c) Pull delayed sweep switch and set to 10 ns.

(d) Set TRIGGER MODE pushbutton to AUTO.

(e) Set TRIGGER SOURCE pushbutton to VERT.

(f) Set TRIGGER COUPLING pushbutton to DC.

(8) Adjust A3R41 (fig. 2)(A3R3 (fig. 2) for CHANNEL B) for a symmetrical

waveform displayed on oscilloscope (R).

Figure 2. A3 input attenuator (cmponent side).

7

(9) While alternately setting CHANNEL A and CHANNEL B SLOPE switches

to (+) and (-), observe that waveform maintains its symmetrical form.

TB 9-6625-1996-35

8

(10) Repeat (8) and (9) above as required to compensate for interaction.

(11) Disconnect oscilloscope and signal generator from TI, reinstall TI from panel,

and reconnect CHAN A P1 cable to A9 J1 CH A and CHAN B P2 cable to A9 J2 CH B.

(12) Replace TI covers.

10. A12 Interface I/O

a. Performance Check

NOTE

This option can only be calibrated in an automated mode.

The TI must be connected to a controller with a properly

configured GPIB IEEE interface card.

NOTE

If you are running this section with any controller and or

software other than the fielded controller and the ICE

environment, you will have to write the required mnemonics

and take reading as per the software that you are using.

(1) Connect TI and multimeter IEEE connectors to the controller GPIB0.

(2) Assure TI address is set to 2 and multimeter address is set to 12.

(3) Adjust TI CHANNEL A and CHANNEL B LEVEL controls to PRESET.

(4) Remove screws holding TI top cover. Do not remove top cover until

instructed.

(5) Press the RESET key on the multimeter.

(6) Output the following mnemonic string to the TI: I2B500A500I1.

(7) Connect multimeter Input HI and LO to TI rear panel CHAN A

TRIG LEVEL.

(8) Output the following mnemonic string to the TI: B500A000I1.

(9) Retrieve the reading from the multimeter. If the reading is not

within limits listed in table 4, perform the listed adjustment.

(10) Repeat technique of (7) through (9) above for remaining table 4 entries.

Table 4. A12 interface I/O.

Multimeter indication

Output

mnemonic

Connect multimeter to

test instrument

rear panel connector

Min

Max Perform adjust

listed below

B500A000I1 CHAN A TRIG LEVEL -2.0005 -1.9995 b1

TB 9-6625-1996-35

9

A:00I1 CHAN A TRIG LEVEL 1.9995 2.0005 b2

B000I1 CHAN B TRIG LEVEL -2.0005 -1.9995 b3

B:00I1 CHAN B TRIG LEVEL 1.9995 2.0005 b4

b. Adjustments

NOTE

Remove top cover to make adjustments, then replace top

cover before repeating (a) above.

(1) Adjust A12 pot A (R69) (fig. 3) for a –2.0000 ± 0.0005 V dc multimeter

indication (R).

(2) Adjust A12 pot B (R74) (fig. 3) for a 2.0000 ± 0.0005 V dc multimeter indication

(R).

(3) Adjust A12 pot D (R86) (fig. 3) for a –2.0000 ± 0.0005 V dc multimeter

indication (R).

(4) Adjust A12 pot C (R82) (fig. 3) for a –2.0000 ± 0.0005 V dc multimeter

indication (R).

Figure 3. I/O adjustment location.

11. Power Supply

NOTE

Do not perform power supply check if all other parameters

are within tolerance.

TB 9-6625-1996-35

10

a. Performance Check

(1) Mount circuit board A6 (fig. 1) on extender boards.

(2) Connect multimeter between A6TP6 and + 5 V RET (fig. 4). If multimeter

does not indicate between 4.98 and 5.02 V dc, perform b(1) below.

(3) Connect multimeter between A6TP3 and - 5.2 V RET (fig. 4). If multimeter

does not indicate between -5.18 and -5.22 V, perform b(2) below.

(4) Replace circuit board A6 in TI and mount circuit board A7 (fig. 1) on extender

boards.

(5) Connect multimeter between A7TP1 (A7TP2; serial prefix 1428A and prior)

and + 15 RET (fig. 4). If multimeter does not indicate between 14.98 and 15.02

V, perform b(3) below.

(6) Connect multimeter between A7TP3 (A7TP7; serial prefix 1428A and prior)

and -15 V RET (fig. 4). If multimeter does not indicate between -14.98 and -

15.02 V, perform b(4) below.

b. Adjustments

(1) Adjust R19 (fig. 4) for 5.00 V indication on multimeter (R).

(2) Adjust R29 (fig. 4) for 5.20 V indication on multimeter (R).

(3) Adjust R16 (fig. 4) (R18 (fig. 4); serial prefix 1428A and prior) for +15.00 V

indication on multimeter (R).

(4) Adjust R17 (fig. 4) (R24 (fig. 4); serial prefix 1428A and prior) for -15.00 V

indication on multimeter (R).

TB 9-6625-1996-35

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R18

+15V

RET

TP2 -15V RETA7 CIRCUIT BOARD S/N 1428A

R24

TP7

TP3

R29

-5.2 V

RET

TP6

+5V

RET

R19

A6 CIRCUIT BOARD

R16 R17

TP1

+15V RET A7 CIRCUIT BOARD S/N 1808

TP3

-15V

RET

Figure 4. Power supply circuit boards.

TB 9-6625-1996-35

12

12. Final Procedure

a. Deenergize and disconnect all equipment.

b. Annotate and affix DA label/form in accordance with TB 750-25.

TB 9-6625-1996-35

PIN: 046669-000

By Order of the Secretary of the Army:

Distribution:

To be distributed in accordance with IDN 342172, requirements for calibration procedure

TB 9-6625-1996-35.

0116212