CTI Products MCN RCD System Planner - Manual (Page 18)

Section 3 System Components and Specifications
Page 14 MCN Comparator Display System Planner
3.7 Transmitter Steering Interface Module (TIB)
The Transmitter Steering Interface Modules (TIBs) work in conjunction with the CIB comparator
Interface Modules and external Transmitter Steering equipment, such as the TSAM Transmitter
Steering Unit from CTI Products.
When a receiver is FORCE VOTED from the PC, the HIB sends a FORCE VOTE command to the
CIB, the TIB that is associated with that CIB also receives the command and activates the TX Select
line for the specified receiver/transmitter. The TIB then activates the Force Select output line for
approximately 100 milliseconds. After this 100 milliseconds, the TX Select lines and the Force Select
line are deactivated so that the TIB can resume monitoring the transmitter status.
The TIB monitors the TSAM’s 8 TX Select lines to determine which transmitter is currently active.
Whenever the TSAM steers to a transmitter, the TSAM updates the TX Select lines to indicate the
currently active transmitter. The TIB sends the status information to a HIB over the MCN network so
that the transmitter status can be displayed on the PC.
Number of Transmitters Supported 8
Open Circuit Voltage (all I/O pins)
jumper E1B removed
jumper E1B installed
+13.8 Vdc nominal
+5 Vdc nominal
Inputs per Transmitter
active low, pull-up to +5 or +13.8 Vdc TX Select In
Input Voltage (Input and In/Out pins) -0.6 to 30 Vdc max
Input Current (Input and In/Out pins):
jumper E1B removed (Vin = 0 Vdc)
jumper E1B installed (Vin = 0 Vdc)
-720 µA max (source)
-270 µA max (source)
Outputs per Transmitter (active low) TX Select Out
Control Outputs (active low) Force Select
Output Saturation Voltage (Outputs and In/Out
pins) with Iout = 100 mA 550 mV max.
Output Pin Current (Outputs and In/Out pins) 150 mA max per pin (sink)
100 mA max per pin if all output are
ON
Maximum Power Dissipation 2 Watts
Input/Output Connection 50 pin Telco style
Table 6 - TIB Module Specifications