Dantel 44210 Installation & Operation Manual page 11

T A - S S
ABLE WITCH AND TRAP
44210 MODULE
STRAP POSITION
422TXD
422DTR
485TXD
RTS
DTR
44210/49210-0798 <90-00025>
INSTALLATION
Checkout
Refer to the firmware manual, 46800-58, for command syntax
and operating instructions when using the modem in 460 ACS
mode. If the 44210 is used in Hayes-compatible mode, refer to
Table B or the instruction manual of the communications
software in use. Checkout of the 44210 is done by placing the
44210 in operation with one or more 44210s or similiar modems
at the distant end that are known to be good. Monitor their
operation by sending and receiving data between them. Monitor
the front panel LEDs to verify proper operation. Refer to Table C
for front panel LED operating information.
When performing the initial module/subassembly checkout, care
should be taken that the switch and strap settings are correct
for the application. Refer to Table A and Figs. 5-8.
Checkout procedures for the optional 49210 subassembly consist
of dialing through both lines of the unit under test and verifying
proper operation by the computer or DTE that is interfaced to
the 44210 modem. The front panel LEDs of the 49210 should be
monitored as well. Refer to Table C for front panel LED operat-
ing information.
S , 44210/49210
ETTINGS
DESCRIPTION
TERM 180-ohm termination across RS-422 TXD inputs (pins 5 and 6).
Use only when RS-422 TXD is used.
GND Grounds the RS-422 TXD negative (-) input (pin 6). Use when the
RS-422 TXD is not used.
TERM 180-ohm termination across RS-422 DTR inputs (pins 7 and 8).
Use only when RS-422 DTR is used.
GND Grounds the RS-422 DTR negative (-) input (pin 8). Use when the
RS-422 DTR is not used.
TERM 180-ohm termination across RS-485 TXD inputs (pins 3 and 4).
Use only when RS-485 TXD is used.
GND Grounds the RS-485 TXD negative (-) input (pin 4). Use when the
RS-485 TXD is not used.
EXT RTS activated by pin 32 (TTL) or 20 (RS-232)
ON RTS always active. Use when RTS is not required or when using
RS-422 or RS-485.
EXT DTR activated by pin 31 (TTL), pin 19 (RS-232), pins 7 and 8
(RS-422), or when RS-485 is used.
ON DTR always active. Use when DTR is not used.
. . .
CONTINUED
P 11
AGE