Specifications

CONFIGURATION:
Setting the Configuration Jumpers and Switches:
The Mini Driver MP card has two different sets of configuration controls. One set is on the main (front) module. The other set is on the interface (rear) module.
The Jumpers and Switches on the Main Module:
The Mini Driver MP card has two jumpers and four switches on its main (front) module-- a jumper and two switches for each modem as shown on the first page. With jumpers JP1 and
JP2, you can control receiver impedance. With switches S2 and S4, you can set the modems for 2-wire or 4-wire operation. With switches S1 and S3, you can control RTS/CTS
delay, echo, carrier control, and receiver squelch. JP1, S1 and S3 apply to modem Unit A; JP2, S2 and S4 apply to modem Unit B.
S1 Position 1 (Unit A) and S3 Position 1(Unit B): RTS/CTS Delay determines the amount of delay after the corresponding modem detects RTS before it sends CTS.
S1-1 Setting:
OFF (down) No delay (default) for Unit A
ON (up) 8-ms delay (turn-off delay less than 1 ms.) for Unit A
S3-1 Setting:
OFF (down) No delay (default) for Unit B
ON (up) 8-ms delay (turn-off delay less than 1 ms.) for Unit B
S1 Position 2 (Unit A) and S3 Position 2 (Unit B): Echo determines whether or not the corresponding modem will echo the data the DTE transmits on TD back to the DTE on RD.
This feature only works in 4-wire mode; nothing happens if it is activated in 2-wire mode.
S1-2 Setting:
OFF (down) Echo off (default) for Unit A
ON (up) Echo on for Unit A
S3-2 Setting:
OFF (down) Echo off (default) for Unit B
ON (up) Echo on for Unit B
S1 Position 3 (Unit A) and S3 Position 3 (Unit B): Carrier Control determines whether the carrier of the corresponding modem is always on or is controlled by RTS. "Always on"
is the factory-default setting; use the "controlled by RTS" setting when you are using the modem in a switched-carrier, multipoint, or hardware-flow-control application.
S1-3 Setting:
OFF (down) Unit A carrier always on (default)
ON (up) Unit A carrier controlled by RTS
S3-3 Setting:
OFF (down) Unit B carrier always on (default)
ON (up) Unit B carrier controlled by RTS
TYPICAL APPLICATIONS
4W FDX 4W HDX 2W
MultipointPoint-to-Point
Jumper and
Switch Settings
S1-1, S3-1: RTS/CTS Dly.
S1-2, S3-2: Echo
ON
OFF
ON
ON
ON
OFF
ON
OFF
S1-3; S3-3: Carrier OFF ON ON
Master: OFF
Slaves: ON
S1-4; S3-4: Rcvr Squelch OFF OFF ON OFF
JP1, JP2: Impedance Lo-Z ( 1 & 2 ) Lo-Z ( 1 & 2 ) Lo-Z ( 1 & 2 )
Master: Lo-Z ( 1 & 2 )
Last Slave(s): Hi-Z ( 2 & 3 )
Other Slaves: Lo-Z ( 1 & 2 )
S2; S4 Wire/4-Wire 4W (Down) 4W (Down) 2W (Up) 4W (Down)