EQUIPMENT DATA - TM-11-6625-3056-120008

TM 11-6625-3056-12

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EQUIPMENT DATA

The Test Set Error Detector TS-3981/P tests digital transmission paths and is specially designed to test the Data

Buffer TD-1065/G. It includes a transmitter that produces a diphase output and a receiver that accepts a diphase

input, detects and counts errors, and measures synchronization time.

Physical

19 in. wide x 5.25 in. high x 14 in. deep overall; 11.5 lb.

Power

105 to 125 volts, 48 to 420 Hz, single-phase, 00 watts maximum. Five-foot, 3-wire power cable

permanently attached to rear panel. Spare fuse supplied.

Measurements Errors and synchronization time.

Data Rate

0.6, 1.2, 2.4, 4.8, 9.6, 16, 32, 32 and 38.4k bits per second; set by front-panel control.

Pattern

Long with length of 215-1 (32,727) bits or short with length of 15 bits; set by front-panel control.

Error

Front-panel pushbutton injects a single error in output pattern each time it is pressed.

Injection

Data Output

Unframed, nonconditioned diphase; 4.5 to 5.5 volts peak-to- peak into 600 ohms, balanced.

Available at two front-panel binding posts.

Data Input

Unframed, nonconditioned diphase; 5 volts peak-to-peak nominal, down to 5 volts peak-to-peak

attenuated by over 3 miles of WF-16 field wire; balanced, 600 ohms input impedance. Applied to

two front-panel binding posts. Green front-panel indicator lamp lights when data is being received.

Input/Output

Front-panel control sets input/output for 4-wire operation output connectors wired to output

Switching

(circuits and input connectors wired to input circuits), 2-wire transmit (output connectors wired to

output circuits and input connectors open), and 2-wire receive (output connectors wired to input

circuits and input connectors open).

Sync

Front-panel control allows receiver to be operated in one of two modes. Open: received data is

loaded continuously into the register and simultaneously compared to the output of the register to

detect differences (errors). Closed: the register is first synchronized to the received data, then

allowed to run independently and compared to the received data to detect differences (errors).

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