HP 805a schematic

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DEPARTMENT OF THE ARMY TECHNICAL BULLETIN

CALIBRATION PROCEDURE FOR

SLOTTED LINE, HEWLETT-PACKARD,

MODELS 805A, 805C, 805D, S810A, G810B, J810B,

H810B, AND X810B; AND

IM-92/U AND IM-92A/U

(NASSAU MODEL 230)

Headquarters, Department of the Army, Washington, DC

10 December 1973

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. IDENTIFICATION AND DESCRIPTION

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

Calibration data card (DA Form 2416)................. 2 2

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

II. EQUIPMENT REQUIREMENTS

Equipment required ............................................. 4 2

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

III. CALIBRATION PROCESS FOR SLOTTED

LINES, HEWLETT-PACKARAD MODELS 805A, 805C, AND 805D, AND IM-92/U AND IM-92A/U (NASSAU MODEL 230)

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

Residual VSWR .................................................... 7 4

Final procedure..................................................... 8 7

IV. CALIBRATION PROCESS FOR SLOTTED

LINES, HEWLETT-PACKARD, MODELS S810A, G810B, J810B, H810B, AND X810B

Preliminary instructions ...................................... 9 7

Equipment setup.................................................. 10 8

Slope and irregularities........................................ 11 10

Final procedure..................................................... 12 11

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SECTION I

IDENTIFICATION AND DESCRIPTION

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

calibration of Slotted Line, Hewlett-Packard Models 805A, 805C, 805D, S810A, G810B, J810B, H810B, and X810B; and IM-92/U and IM-92A/U (Nassau Model 230). The manufacture's instruction manual was used as the prime data source in compiling these instructions. These slotted lines will be referred to as the "TI" (test instrument) throughout this bulletin.

a. Model Variations. Variations among, models are described in table 1 and in text. b. Time and Technique. The time required for this calibration is approximately 2

hours per unit, using the microwave technique.

2. Calibration Data Card (DA Form 2416). Maintenance forms, records, and reports which are to be used by calibration personnel at all calibration levels are listed in and prescribed by TM 38-750.

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

Frequency range 500 to 4000 MHz

2.60 to 3.95 GHz (H-P S810A).

3.95 to 5.85 GHz (H-P G810B).

5.30 to 8.20 GHz (H-P J810B).

7.05 to 10.0 GHz (H-P H810B).

8.0 to 12.4 GHz (H-P X810B).

Characteristic impedence.

Residual SWR Less than 1.04:1

Slope and irregularities Less than 1.01:1

H-P Models 805A and 805C.

H-P Model 805D.

IM-92/U and IM-92A/U.

H-P Models S810A, G810B, J810B, and X810B.

This specification is for information only and is not verified in this bulletin.

50 ohms

46.3 ohms

Less than 1.02:1

1 3

1 2 3

1 3 2 4

SECTION II

EQUIPMENT REQUIREMENTS

4. Equipment Required. Tables 2 and 4 identify the specific equipment used in this

calibration procedure. This equipment is issued with secondary transfer calibration standards set 4931-621-7877 and is to be used in performing this procedure. Alternate

TB 9-6625-108-50

items may be used by the calibrating activity when the equipment listed in tables 2 and 4 is not available. 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 tables 2 and 4. The accuracies listed in tables 2 and 4 provide a four-to-one accuracy ratio 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.

5. Accessories Required. The accessories listed in tables 3 and 5 are issued with secondary transfer calibration standards set 4931-621-7877 and are to be used in this calibration procedure. When necessary, these items may be substituted by equivalent items unless specifically prohibited.

Table 2. Minimum Specifications of Equipment Required

Manufacturer, model, and

Item Common name Minimum use specifications.

A1 MODULATOR Range: 2 to 4 GHz

Hewlett-Packard, Model

Type: Square wave

A2 PIN MODULATOR

Range: Square wave modulation

Hewlett-Packard, Model 8732B

from 2 to 4 GHz.

A3 SIGNAL SOURCE Range: 2 to 4 GHz

(7923114)

Power output: 10 MW min A4 SLIDING TERMINATION Range: 2 to 4 GHz Narda, Model 22487 (7923224). A5 SWR METER Range: 1.01 to 1.1

Hewlett-Packard, Model Y10-

part number.

C108403A (7912321).

(7912581).

415E (7910160-3).

Table 3. Accessories Required

Item Common Name Description And Part Number

B1 ADAPTER

N plug to N plug (MS-15507-57B)

B2 ADAPTER N jack to GR900 (7911051) or N plug to GR900

B3 ADAPTER B4 ADAPTER B5 ADAPTER B6 VARIABLE

(7911052).

2 2 2

N jack to 7/8 in., jack (8899714) N plug to 7/8 in., plug (10528698) 90° bend with N plug to N jack (MS90156-27D) 0 to 15 db, 1 to 4 GHz (7923130)

ATTENUATOR B7 CABLE 18 in., RG-9 ( ) /U with N plug terminations (10519072). B8 CABLE

24 in., RG-58 ( ) /U with BNC plug terminations (10519141).

B9 ISOLATOR 1 to 4 GHz (7913127-2)

Two required.

Used for H-P Model 805D.

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SECTION III

CALIBRATION PROCESS FOR SLOTTED LINES,

HEWLETT-PACKARD MODELS 805A, 805C, AND 805D;

AND IM-92/U AND IM-92A/U (NASSAU MODEL 230)

6. Preliminary Instructions

a. The instructions outlined in this paragraph are preparatory to the calibration

process. Personnel should become familiar with the entire section before beginning the calibration.

b. Items of equipment used in this procedure are referenced within the text by common name and item identification number as listed in tables 2 and 3. For the identification of equipment referenced by item numbers prefixed with A, see table 2, and for prefix B, see table 3.

WARNING

HIGH VOLTAGE is used during the performance of this calibration. DEATH ON CONTACT may result if personnel fail to observe safety precautions.

NOTE

Unless otherwise specified, verify the results of each test and take corrective action whenever the test requirement is not met before continuing with the calibration.

c. Connect the equipment as shown in figure 1.

d. Energize the equipment and allow sufficient time for warmup.

e. Adjust signal source (A3) for a 2-GHz leveled output.

7. Residual VSWR

NOTE

The VSWR should be measured on the 30-db range of SWR meter (A5). To set up a reference for this measurement, adjust modulator (A1) frequency, variable attenuator (B6), and the TI probe tuning and depth controls until the SWR meter indicates full scale with minimum TI probe depth.

a. Performance Check

(1) Adjust sliding termination (A4) and the TI until the measured SWR is

maximum. Record SWR meter (A5) indication as SWR max.

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