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13
DAS 8.4 Plus Installation and Operation Manual
INSTALLATION
The DAS 8.4 Plus is supplied with a reversed modular cable and a 9-pin D-con-
nector modular adapter (S9) for serial control. Only use the reversed modular cord
that is supplied with the DAS 8.4 Plus or a replacement that reverses, such as Radio
Shack Cat No. 279347. Connect the cable between the DAS 8.4 Plus and your
computer. The DAS 8.4 Plus may operate at baud rates 9600 or 38400 baud. The
unit is shipped set for 9600 baud, with 8 data bits, no parity and one stop bit. Load
your favorite communication software package Windows 95/98/ME/NT/2000/XP
HyperTerminal, etc.) Using the protocol of 9600-N-8-1. Set the mode to: DIRECT,
Flow Control to: NONE and emulation to: ANSI.
Connecting Two DAS 8.4 Plus’s to a Single Computer’s Serial Port:
Multiple DAS 8.4 Plus’s may be cascaded serially to operate from the same seri-
al port. The first step is to assign unit ID’s to each DAS 8.4 Plus. One suggestion
is to assign 1 to the first DAS 8.4 Plus and 2 to the second switcher. The second step
is to parallel the serial ports of the DAS 8.4 Plus’s. Plug the male end of the duplex
modular adapter into the supplied female (S9) DB-9 to RJ-11 adapter, then attach the
supplied reversed modular line cords into each of the duplex modular adapter recep-
tacles (Radio Shack Cat No. 279-0357) and the other ends into each DAS 8.4 Plus
modular receptacles. See the diagram below. NOTE: Three or more DAS 8.4
Plus’s may be daisy chained by using the above description and a Radio Shack Cat
No. 279-0410, 5-jack modular adapter.
Serial Control:
The unit is controlled in either Menu or Burst mode. It can run at the following
data rates:
• 9600 Default
• 38,400
Serial communications is multi-drop RS-232. Commands may be entered either
via a menu (menu mode) or a short form code (burst mode). All commands and
responses use normal ASCII characters, facilitating scripting. A burst mode com-
mand starts with an asterisk (“*”) followed by the device (ID) address as a single
decimal digit. A burst mode command must be entered within 5 seconds or it will
time out. The command to enter menu mode starts with an asterisk (“*”) followed
by the device (ID) address as a single decimal digit and then MM. The menu mode
displays certain parameters, and allows the setting of these parameters. In both
cases, device (ID) address (0-7) is specified with the on-board dipswitches.
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To DAS 8.4 #1
To DAS 8.4 #2