DELAY LINE SET

MIL-HDBK-162A

Volume 1

15 December 1965

Section 1

DATE: 1 April 1964

ITEM NAME: DELAY LINE SET

COGNIZANT SERVICE: USAF

TYPE: AM-1796/FPS

FEDERAL STOCK NUMBER: 5840-628-1122

USA

USN

USAF

USMC

STATUS OR TYPE CLASSIFICATION

Std

Mfg(s) Name or Code Number: Hallicrafters Company

FUNCTIONAL DESCRIPTION

Delay Line Set AM-1796/FPS is a dual-channel

equipment used for synchronizing the zero-range return

of duplex radar and IFF equipment. The AM-1796/FPS

also supplies synchronization pulses to Coordinate Data

Transmitting Set AN/FST-2. This synchronizing function

is accomplished by a number of delay lines and blocking

oscillators comprising Delay Line Set AM-1796/FPS.

Delay Line Set AM-1796/FPS provides two delay

channels, designated as a duplex. Delay Line Set AM-

1796/ FPS(XD-1) provides one delay channel,

designated as a simplex.

RELATION TO SIMILAR EQUIPMENT

None.

TECHNICAL DESCRIPTION

Input Pulses: 15 to 90v, positive

Delay Range: 0 to 53. 2 sec in 0. 1 sec increments

at operating points

Number of Vacuum Tubes: 58 (plus 6 in spare units)

Number of Silicon Rectifiers: 16

Input Impedance: All greater than 10, 000 ohms

Pulse Power Output (Triggering); +40,+30, and -10v into

nom 50 ohm load

Delay Lines: Two 35-,sec delay lines, tapped to supply

delays of 5, 7. 5, 10, 20, 30, 32. 5, and 35-secs;

two 15-,sec delay lines, tapped to supply delays of

0. 3, 6, 9, 12, and 15 sec; 15 variable delay lines,

variable from 0 to 3.2 secs in increments of 0.1

sec

Pulse Repeater Modules (Generator, Pulse 0-538/FPS):

4 available for each channel, used with any variable

delay module to sup

ply any auxiliary output

Temperature Requirements: Operating, -29 to 54 deg C;

non-operating, -54 to +71 deg C

Barometric Pressure: Operating, sea level to

approximately 10, 000 ft; non-operating, sea level to

approximately 40, 000 ft

Cooling Method: Air convection

AM-1796/FPS: 1