RFL Electronics GARD 8000 - Table 6-6. Ju Mper Settings and Switch Function for the GA RD 8000 Audio Tone TPS Module

Module Descriptions
GARD 8000 SYS RFL Electronics
April 23, 2015 6-16 973.334.3100
channels of multiplexers. The channels are programmable from 300Hz to 4kHz. Channel 1 can be
configured for protection, or as an internal modem for remote interrogation. Channels 2 through 4 are
for protection only.
Table 6-6. Jumper Settings and Switch Function for the GARD 8000 Audio Tone TPS Module
Reference
Designation
Description
Function
J6
2-pin Jack
Installed: Watch dog timer disable, for factory use only.
Not Installed: Normal operation.
J7
3-pin Jack
In position: For factory use only.
Out position: Normal operation.
J8
3-pin Jack
50: 50Hz filter to reduce line noise.
60: 60Hz filter to reduce line noise.
J11
3-pin Jack
2W: For 2-Wire operation.
4W: For 4-Wire operation.
SW1
Push-button switch
Press for DSP reset. For factory use only.
TB1
Terminal board
Used to connect the module to TX and RX, 2W and 4W.
J9
DB9 - male
RS-232/485 connector. (See Table 6-7 for pin-outs)
J13 through J17
3-pin Jack
A: RS-232 (default)
B: RS-485
6.4.1 TRANSPARENT MODEM MODE
Channel 1 may be used as a single 300 baud modem with an external RS-232/RS-485 interface. The
modem is full duplex on a 4-wire circuit. Additionally, channels 2 through 4 can be used for bi-
directional audio tone transfer trip. This version also supports the logic bit transfer mode described in
AN8000-009.
Functionality Overview:
 300 Baud data from the external connector is passed through the 4 wire audio path to a
matching unit on the far end.
 The external interface is jumper selectable for RS-232 or RS-485.
 The modem is transparent to the serial protocol. i.e. data bits, stop bits, parity, etc. are
passed through intact with no settings required.
 The modem does not support or transfer hardware flow control. If necessary, the
application must provide software flow control (Xon/Xoff).
 The only setting related to this mode is the Modem Type. Setting this to “Transparent”
enables this mode. All other settings are the same as any modem application.
 Currently channel 1 can be used for ping pong, addressing and remote interrogation. These
functions are removed when any modem mode other than Standard is selected.
 Channels 2 through 4 are functionally unchanged.
 600 Hz must be allocated for the status transfer on the modem in addition to the transfer
trip.
 Remote reporting, ping pong and addressing are disabled on the Audio Tone General
Settings and status web pages when any modem mode other than Standard is chosen.