View source for TS-629A~U

==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.


[[File:TS-629A_U.png|400px]]

==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


[[Category:Military/Test Equipment]]
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