Baud Rate
The baud rate is set by setting dip switches 1 and 2 of switch bank SW3. These two dip switches are labeled “BR”.
(See Figure 3.) Use the following table to set these switches to the proper baud rate:
I I
on
don’t
car@
4800
i \
1ST
I A AAAAA - _
87C51
TRANSPONDER
DIP SWITCHES
(SHOWN SET FOR
ADDRESS 18)
ENCODER HARD ADDRESS
DIP SWITCHES
Transponder Address Setting
Figure 3
Controller Bd.
Switches 3 through 8 of switch bank SW3 are for setting the transponder address. Each dip switch carries a binary
weight corresponding to its position. These switches are labeled “ADDR” and the switches with a binary weight
of 1 and 32 are marked. The address of the transponder in the example shown in Figure 3 is 18.
The 2100 transponder requires two transponder addresses. The first address is the monitor point transponder
address, the second is the control point transponder address. Set the ADDR dip switches to the address of the
first transponder. (The second transponder always occupies the next consecutive address.) This is done in the
identical manner which other 2120 transponder addresses are set. Remember, the transponder address is always
one less than the transponder number.
INSTALLATION INSTRUCTIONS
1. Power down the 2100 transponder by disconnecting both battery and AC power.
2. Prepare the 2100 Transponder and the 2100/2120 Interface boards as described above.
3. Insert the communication board in the slot which the 2100 Transmission board previously occupied. If the *
2120 is transmitting, the two yellow LED s will flicker indicating reception of DC transmissions. The LED s
are labeled PRI and SEC and indicate activity on the primary and secondary channels of the transponder.
(The A’ and B’ terminals on the 2100 are the primary terminals.)
4. Insert the controller board in the slot previously occupied by the 2100 Controller board.
3
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