Description

TM 11-6625-444-14-1

±1100V DC or RMS (1500V)

Overload

Five full decades of digits plus a sixth digit

peak) may be applied to any

overrange indicator display the measured input or

range without damage

percentage ratio to the external reference voltage.

±0.01% of reading or ±1 digit

Accuracy

Polarity of the input is displayed adjacent to the

Periodic use of DC ZERO

overrange digit. Pushbutton switches allow

typically once every 8 to 24

hours, is required to maintain

selection of modes of operation and ranges. A

accuracy.

lighted function annunciator continuously indicates

Temperature coefficient

±0.0007% of reading per °C.

which mode of operation is selected.

Input impedance:

b. Special features include a variable sample

±10V range

10,000 megohms

rate, selectable four-pole filter, auto ranging, and

±100V, ±1000V range 10 megohms

Noiserejection:

data output. Provisions have also been made to

60dB@ 60Hz

Normal mode (filtered)

allow installation of optional plug-in assemblies to

Common mode (with up

expand measurement and system capability.

to lK unbalance in

Options which may be installed are as follows:

either input lead):

(1) Ac converter (-01).

140 dB

120dB@ 60Hz

(2) Data output (-03).

Balancing time

2 seconds

(3) Remote control (-04).

Automatically selected

Auto range

Dc ratio:

1-6. Description

Accuracy

0.005%, of reading or ±1 digit

Input impedance

Greater than 50 kilohms at ex-

a. The voltmeter is completely solid-state in

ternal dc voltage ratio input.

design and most circuitry is located on easily

Ranges:

removed plug-in cards. An extender card located

Input voltage ranges

inside the voltmeter allows servicing of each plug-

EXTV

100V

1000V

10v

REF

in card. All circuitry is housed within a metal

1000%@ 10V in

100%@ 1V in

10,000%@ 100V in

inclosure fitted with protective covers. The covers

100%@ 10V in

1000%@ 100V in 10,000%@ 1000 V in

10V

are easily removed to provide maintenance access.

10%@ 10V in

100V

100%@ 100V in 1,000%@ 1000V in

b. The chassis is a full rack width in size and

designed for installation in a standard 19-inch

b. General Specifications.

equipment rack. Holes in the front panel facilitate

Temperature:

rack mounting. Nonmarring feet are also included

+32 °F. to +122°F

operating

to allow bench-top use.

-65° F. to +160°F.

Nonoperating

c. All operating controls, indicators, and input

Meets requirements of MIL-

Humidity

P r o c e d u r e II,

STD-810,

connectors are located on the front panel (fig. 1-2).

Method 507.

The power fuse and connector, 1 15/230V AC slide

Meets requirements of MIL-

Altitude

switch, data output. connector, rear input con-

STD-810, Procedure 1, Method

nectors, and external reference input connectors

500

are located on the rear panel (fig. 1-3).

Meets requirements of MIL-

Vibration

STD -810, Part 1, Procedure

1-7. Technical Characteristics

IX, Method 514

a. Mainframe Specifications

115/230V AC + 10%, 50 to 400

Input power

Hz, single phase

Dc volts:

30 minutes

Warmup time

Ranges

±1V, ±10V, ±100V, ±1000V

See figure 1-4

Dimensions

Automatic,

instantaneous

Polarity

selection and display

1-8. Items Comprising an Operable Equipment

±0.001% of range

Resolution

Digital Voltmeter AN/GSM-64B and power cable

20% , ±1100V maximum input

Overrange

c o m p r i s e an operable equipment.

on 1000V range

Change 1

1-2