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15
ADMS 44.22 Installation and Operation Manual
INSTALLATION
2.8
RS-232 Serial Port
The ADMS 44.22 RS-232 port is a RJ11 (6P4C) telco connector located on
the rear panel of the unit and is labeled ‘Computer’, as shown in the picture above.
The unit is supplied with a Broadcast Tools® S9 RJ-11-to-DB9 modular adapter and
a reverse-wired 4-conductor RJ11 telephone cord for connecting your computer or
hardware control device’s RS-232 port to the Computer jack on the rear panel. Use
only the cord supplied with the unit or a suitable reverse-wired replacement such as
the Radio Shack 279-0347 telco cord. The wiring of the adapter is shown below:
The ADMS 44.22 can operate at 4800, 9600, 38400, and 57600 baud. The
baud rate is set at power up with the BD0 and BD1 switches (SW4 & SW5) on the
rear panel, and is set to 9600 from the factory. Any computer terminal program that
supports ANSI terminal emulation can be used to control the ADMS (Procomm,
Bitcom, VanDykeTM, Windows® HyperTerminal, etc.). Use the following table to
configure your terminal application or dedicated hardware controller device’s com-
munications settings:
With higher baud rates the overall RS-232 cable length between the terminal
and the ADMS 44.22 should be kept to approximately 10’, following the EIA rec-
ommendations for serial cable length. Longer cable runs may be used with lower
baud rates (up to 50’ at 9600 baud). Use standard straight-wired RS-232 DB9-F to
DB9-M cables to extend the distance from your computer or hardware controller to
the Broadcast Tools® S9 adapter. For distances longer than those recommended by
the EIA, you can use any number of popular KVM or dedicated RS-232 extender
devices such as the Gefen RS232 Extender (www.gefen.com).
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RJ-11 Pin DB9 Pin
ADMS 44.22
(perspective)
4
3
RS-232 Receive
3
2
RS-232 Transmit
2
5
Ground
Parameter
Terminal Setting
Baud Rate
Match ADMS 44.22
Data Bits
8
Parity
None
Stop Bits
1
Flow Control
None
Emulation
ANSI
RS-232 Terminal Communications Settings
MODULAR JACK
PIN NUMBERS