*TB 9-6625-108-50
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.
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Paragraph |
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SECTION |
I. IDENTIFICATION AND DESCRIPTION |
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Test instrument identification ............................. |
1 |
2 |
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Calibration data card (DA Form 2416)................. |
2 |
2 |
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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 |
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LINES, HEWLETT-PACKARD, MODELS |
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S810A, G810B, J810B, H810B, AND X810B |
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Preliminary instructions ...................................... |
9 |
7 |
Equipment setup .................................................. |
10 |
8 |
Slope and irregularities ........................................ |
11 |
10 |
Final procedure..................................................... |
12 |
11 |
TB 9-6625-108-50
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 |
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Test instrument |
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parameters. |
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Performance specifications |
Frequency range |
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500 to 4000 MHz 1 2 3 |
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2.60 to 3.95 GHz (H-P S810A). |
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3.95 to 5.85 GHz (H-P G810B). |
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5.30 to 8.20 GHz (H-P J810B). |
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7.05 to 10.0 GHz (H-P H810B). |
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8.0 to 12.4 GHz (H-P X810B). |
Characteristic impedence.5 |
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50 ohms 1 3 |
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46.3 ohms 2 |
Residual SWR |
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Less than 1.04:11 3 |
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Less than 1.02:12 |
Slope and irregularities |
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Less than 1.01:14 |
1H-P Models 805A and 805C.
2H-P Model 805D.
3IM-92/U and IM-92A/U.
4H-P Models S810A, G810B, J810B, and X810B.
5This specification is for information only and is not verified in this bulletin.
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
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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
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Manufacturer, model, and |
Item |
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Common name |
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Minimum use specifications. |
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part number. |
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A1 |
MODULATOR |
Range: |
2 to 4 GHz |
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Hewlett-Packard, Model |
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Type: Square wave |
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C108403A (7912321). |
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A2 |
PIN MODULATOR |
Range: |
Square wave modulation: |
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Hewlett-Packard, Model 8732B |
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from 2 to 4 GHz. |
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(7912581). |
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A3 |
SIGNAL SOURCE |
Range: |
2 to 4 GHz |
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(7923114) |
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Power output: 10 MW min |
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A4 |
SLIDING TERMINATION |
Range: |
2 to 4 GHz |
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Narda, Model 22487 (7923224). |
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A5 |
SWR METER |
Range: |
1.01 to 1.1 |
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Hewlett-Packard, Model Y10- |
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415E (7910160-3). |
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Table 3. |
Accessories Required |
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Item |
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Common Name |
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Description And Part Number |
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B1 |
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ADAPTER1 |
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N plug to N plug (MS-15507-57B) |
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B2 |
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ADAPTER |
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N jack to GR900 (7911051) or N plug to GR900 |
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(7911052).2 |
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B3 |
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ADAPTER2 |
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N jack to 7/8 in., jack (8899714) |
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B4 |
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ADAPTER2 |
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N plug to 7/8 in., plug (10528698) |
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B5 |
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ADAPTER2 |
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90° bend with N plug to N jack (MS90156-27D) |
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B6 |
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VARIABLE |
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0 to 15 db, 1 to 4 GHz (7923130) |
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ATTENUATOR |
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B7 |
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CABLE |
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18 in., RG-9 ( ) /U with N plug terminations (10519072). |
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B8 |
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CABLE1 |
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24 in., RG-58 ( ) /U with BNC plug terminations (10519141). |
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B9 |
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ISOLATOR |
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1 to 4 GHz (7913127-2) |
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1Two required.
2Used for H-P Model 805D.
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TB 9-6625-108-50
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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