SECTION I IDENTIFICATION AND DESCRIPTION

TB 9-6625-2348-35

SECTION I

IDENTIFICATION AND DESCRIPTION

1. Test Instrument Identification.

This bulletin provides instructions for the

calibration of Digital Multimeter, John Fluke, Models 87 and 87 III. The manufacturers'

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. Variations among models are described in text.

b. Time and Technique. The time required for this calibration is approximately 1

hour, 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 specifications which

pertain to this calibration are listed in table 1.

Table 1. Calibration Description

Test instrument parameters

Performance specifications

Range: 0.5 Hz to 200 kHz

Accuracy: 0.005% + 1 count

Dc voltage

Model 87

Range: 0 to 1000 V in 5 ranges

Accuracy: 0.1% of input +1 count

Model 87 III

Accuracy: 0.1% of input + 1 count for 400 mV range

0.05% of input + 1 count for all other ranges

Dc current

Model 87

Range: 0 to 10 A in 6 ranges

Accuracy: 0.2% of input +2 counts

Accuracy: 0.2% of input + 2 counts in 4000 A, 400 mA and

Model 87 III

10.00 A ranges; 0.2% of input + 4 counts in 400 A,

40 mA and 4000 mA ranges