IS200DTBCG1A - Contact Output Termination Module

IS200DTBCG1A - Contact Output Termination Module IS200DTBCG1A - Contact Output Termination Module

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Part Number: IS200DTBCG1A
Manufacturer: General Electric
Series: Mark VIe
Product Type: Contact Output Termination Module
Technology: Surface Mount
Analog output current: 0-20 mA
Operating temperature: -30 to 65°C
Size: 23.8 cm high x 8.6 cm wide
Repair: 3-7 Day
Availability: In Stock
Weight: 2lbs
Country of Origin: United States
Manual: GEH-6153


IS200DTBCG1A is a Contact Output Termination Module manufactured and designed by General Electric as part of the Mark VIe Series used in GE Distributed Control Systems. Q11, Q21, and Q51 is where you'll find the Contact Output Termination Module (DTBC). In position four of "Q21" and "Q51," DTBC is connected to the 30 relays on the TCRA. With the help of DTBC's hardware jumpers, 18 of the 30 outputs on Q51's DTBC board can be set up as solenoids. The four contact output relays on the TCRA in position for "Q11" are wired to the DTBC in "Q11". For the purpose of controlling the gas manifold blow-off valve, the hardware jumpers on the DTBC's Q11 have been specifically set up.


JS1 through JS8 - Reads the relay signals from the TCRA board in location four.
J8 - Receives the power for the solenoids from the TCPD board in the core.
J15 - Connects to J16 to carry 125 V dc power for contact outputs #16, #17, and #18. Not typically used on the core.
J16 - Connects to J15 to carry 125 V dc power for contact outputs #16, #17, and #18. Can only be connected in the core. Not typically used on the core.


P1/M1 through P18/M18 - Solenoid enable for contact outputs #1 through #18 respectively. Both must be in to enable the solenoid power, or both out to disable it. The configuration of the DTBC for gas manifold blow-off valve control does not follow this convention.

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What is a Contact Output Termination Module (COTM)?

The Contact Output Termination Module, or COTM, is a device used in electronics and telecommunications to terminate a contact output signal. It provides a load or termination impedance to prevent signal reflections and maintain signal integrity.

What is the purpose of a Contact Output Termination Module?

The primary purpose of a COTM is to eliminate signal reflections that may occur when a contact output signal is not properly terminated. Signal reflections can lead to data errors, and signal degradation, and can interfere with other devices on the same network.

How do I determine the correct termination impedance for my COTM?

The termination impedance should match the characteristic impedance of the transmission line. This impedance value is typically specified by the manufacturer of the transmission line or cable you are using. It is usually 50 or 75 ohms for most common applications.