SECTION I. IDENTIFICATION AND DESCRIPTION

TB 9-6625-1958-24

SECTION I

IDENTIFICATION AND DESCRIPTION

1. Test Instrument Identification.

This bulletin provides instructions for the

calibration of Time Mark Generator, Tektronix, Types TG 501A, TG 501 and TG 501 Option

1. The manufacturer's manual was used as the prime data source in compiling these

instructions. The equipment being calibrated will be referred to as the TI (test instrument)

throughout this bulletin.

a. Model Variations. Variations among models are described in 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. Forms, records, and reports required for calibration

personnel at all levels are prescribed by TB 750-25.

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

Markers

Range: 1 ns to 5 s

Accuracy: 1 part in 105 ( 0.00l%)

5 parts in 107 ( 0.00005%) (Option 1)

Amplitude: >1 V peak into 50 , 5 s to 10 ns

>750 mV p-p into 50 , 5 ns and 2 ns

>200 mV p-p into 50 , 1 ns

Variable error readout

Range: +7.5 to -7.5%

Accuracy: one least significant digit

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-286; 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 the

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

calibration: Extender, Tektronix 067-0645-02 and Power Module, Tektronix TM 500 series.