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MicroLok

II Track Circuit PCBs

Specifications

MicroTrax Track Circuit PCB

Cab Signal Compatibility: 40, 50, 50 and 100 Hz (see ordering tab.)

T.C. Length Adjustment: 0 to 36,000 ft. (10,973 m) in 1000 ft. (305 m)

Standard Codes:

Fast Codes:

Code Format:

Code Message Length:

Code Start/End:

Code Pulse Durations:

Code Amplitude:

ECode Track Circuit PCB

Track Circuit Lengths:

Shunt Det. Response:

Transmitter:

Receiver:

Sys. P.S. Current Draw:

Battery:

OS Track Circuit PCB

Operating Power:

Transmit/Receive Freq.:

Receiver Output Voltage:

Track Circuit Length:

Track Lead Resistance:

Shunting Voltage Adjust:

increments

23 total (3 reserved for link-up, sleep mode and

quick tumble down)

20 (12 sec. acceptance time)

2 (6 sec. acceptance time)

2 sec.

167 msec guard pulse

167 or 333 msec.

2V p-p

ECode-to-ECode: Up to 24,000 ft. (7315 m) @ 3

ohms/1000 ft. (305 m) ballast

ECode to EC4: Up to 15,000 ft. (4572 m) @ 3

ohms/1000 ft. (305 m) ballast

ECode-to-EC5: Up to 24,000 ft. (7315 m) @ 3

ohms/1000 ft. (305 m) ballast

Standard: 3.7 to 6.3 sec.

Shunt clear: 11.2 to 12.6 sec.

Quick shunt option: 100 msec (approx.)

Output to 2.5 Ohms: 1.0 to 2.5 Vdc

Output Impedance: 0.15 Ohms

Current measurement range: 0 to 6.0A

Input impedance: 0.15 Ohms

Current measurement range: 0 to 3.6A

+5V: 110 Ma

+12V: 43 Ma

-12V: 52 mA

180 Ma (nom.), 1.1A (max.)

B12/N12 and +5Vdc

400 Hz

12 Vdc to 20 Vdc (15 Vdc nom.)

1000 ft. (305 m)

0.5 ohms (max.)

Via jumpers

(Formerly known as Union Switch & Signal)

Ordering and Additional

Information

Refer to tabulation for track

circuit PCBs' part numbers.

Refer to RSE-1A2 for

additional information on

ECode Track Circuit

applications.

Contact your ASTS USA

Account Executive for

MicroTrax and ECode

applications and MicroLok

II applications possibilities

in general.

Request ASTS USA

Service Manual SM-6800E

for detailed information on

ECode Track Circuit

installation and calibration.

Request ASTS USA

Service Manual SM-6800B

for detailed information on

MicroTrax Track Circuit and

OS Track Circuit installation

and calibration.

Rev. 4-11

, p. 3