TS-629A/U

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Contents

OVERVIEW

A portable general purpose test panel designed to accurately measure audio volume levels in broadcasting, sound recording, telephone transmission, and allied fields where precise monitoring over the audio range is required.


TS-629A U.png

TECHNICAL DESCRIPTION:

Circuit Information
The input circuit consists of a shielded transformer. This is followed by an audio-amplifier, and the indicating meter. A thermal relay shorts out the meter for 20 seconds after power is applied to the built-in regulated supply to avoid damage due to surge voltages.
Power Supply
115 volts ±10%, ac, 50 to 60 cycles per second, single-phase, 15 watts ;Frequency Range:
30 to 15,000 cps
Audio Level Indicating Range
As a bridging type instrument: -20 to +20 db with a total range including meter scale of -40 to +23 db
As a terminating type instrument: -40 to +20 db with a total range including meter scale of -60 to +23 db
Meter Scale
-20 to +3 dbm
Reference Level
0 VU (1 mw into 600 ohms)
Input Impedance
Terminating Connection: 600 ohms
Bridging Connection: 12,500 ohms
Frequency Response
±0.1 db from 200 to 10,000 cps
±0.5 db from 30 to 15,000 cps
Accuracy
Overall: ±5%
From-15 to +10 db from 200 to 10,000 cps. ±1%
Temperature Range
-15° C. (+5° F.) to +55°C. (+131° F.)
Humidity Range
Up to 90%
Major Unit
TS429A/U 5 1/4" x 19" x 11"; 20 lbs


TUBES, CRYSTALS, TRANSISTORS:

  • 1 - JAN-6AG7,
  • 1 - JAN-6X5GT,
  • 1 - JAN-OD3/VR-150

REFERENCE DATA AND LITERATURE:

NAVSHIPS 91900 (Instruction Book)
TO 33A1-10-29-1 (Instruction Book)
MIL-A-17045 (Ships) 21 February 1952