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TC2400 & TC2401
Ring User's Manual
Rev. 1.7
LED Functions (cont.)
OPTIC SIGNAL LEDs
Rx-A:
When lit, indicates the optic signal received at "RxA" is above the sensitivity
threshold. It does not necessarily mean a valid signal is received.
Sync-A:
Indicates a valid data packet is received at "RxA" (when lit); flashes if data
packet is invalid.
Rx-B:
When lit, indicates the optic signal received at "RxB" is above the sensitivity
threshold. It does not necessarily mean a valid signal is received.
Sync-B:
Indicates a valid data packet is received at "RxB" (when lit); flashes if data packet is invalid.
POWER & Vcc LEDs
PWRA:
Indicates a +12V DC power supply is connected to the power jack "A" input on the rear panel
(when lit).
PWRB:
Indicates a +12V DC power supply is connected to the power jack "B" input on the rear panel
(when lit).
Vcc A:
Indicates a +5V DC operating voltage is being derived from the power supply that connected to
power jack “A”(when lit).
Vcc B:
Indicates a +5V DC operating voltage is being derived from the power supply that connected to
power jack “B”(when lit).
External DIP Switch Functions
SW1:
RMTLB
(Remote Loopback). Loops back the received signal from a remote location (for
diagnostic testing).
SW2:
LOCLB
(Local Loopback). Loops back the received signal from the
local RJ11 connector (for diagnostic testing).
SW3:
SIG GEN
(Signal Generator). Generates a pulse signal that emulates a
broadcast msg (for diagnostic testing).
SW4:
DIS ALM
(Disable Alarm). When this switch is in the down (On)
position, the audio alarm buzzer and dry contact relay are disabled.
Internal SW2 DIP Switch Functions
The Internal DIP Switches are located on the TC2400/2401’s PCB at board location SW2 (see Chapter 5).
The DIP Switch functions for the Master and Slave units are as illustrated below.
PW RA
PW RB
Vcc A
Vcc B
Rx-A
Sync-A
Rx-B
Sync-B
TC2400 (MASTER UNIT)
ON
1
2
3
4
5
6
7
8
TC2401 (SLAVE UNIT)
ON
1
2
3
4
5
6
7
8
DIP Switches 6, 7, & 8 are used for setting the
RS-485 transition timer. Refer to Table 1
DIP Switches 6, 7, & 8 are used for setting the
RS-485 transition timer. Refer to Table 1
