SECTION II EQUIPMENT REQUIREMENTS - TB-9-6625-2297-350004

SECTION I IDENTIFICATION AND DESCRIPTION - TB-9-6625-2297-350003

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TB-9-6625-2297-35 Power Meter Hewlett-Packard Model 437B Manual
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TB 9-6625-2297-35

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. 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 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 accessory is also required for this calibration: Power

sensor cable, Hewlett-Packard, Model 11730A.

Table 2. Minimum Specifications of Equipment Required

Minimum use

Manufacturer and model

Common name

specifications

(part number)

FREQUENCY

Frequency range: 49.5 to 50.5 MHz

Fluke, Model PM6681/656

COUNTER

Accuracy: 0.25%

(PM6681/656)

MULTIMETER

Ability to measure approximately 200Ω

Hewlett-Packard, Model

3458A (3458A)

Ability to measure V dc

POWER METER

Range: 0.988 to 1.012 mW

Hewlett-Packard, Model E12-

Accuracy: 0.7%

432A (MIS-30525)

Frequency range: 50 MHz

w/thermistor mount, Hewlett-

Must have VCOMP and VRF outputs

Packard, Model H75-478A

(7915907)

RANGE

Range: 3 W to 100 mW

Hewlett-Packard, Model

CALIBRATOR

11683A (11683A)

Accuracy: 0.25%

SECTION III

CALIBRATION PROCESS

6. Preliminary Instructions

a. The instructions 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 manuals.

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

CHANGE 1 3

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