
7.4 Setting MODEM or Direct Connect Configurations
PCSC supports the US Robotics 33.6/56K Sportster model for MODEM communication. It is
recommended that the MODEM be powered up via an U.P.S. (Uninterruptible Power Supply).
NOTE: The US Robotics 33.6/56K Sportster has not been evaluated by UL,
and is not suitable for UL installations.
To set up the IQ-400 for MODEM communication, configure the Dipswitch settings at SW1, as
follows:
Example: MODEM connection (IQ-400, panel address is #1)
NOTE AT SW1, switch #8 must remain in the ON position (left) for MODEM
communication.
To set up the IQ-400 for direct connect communication (default), configure the Dipswitch settings
at SW1, as follows:
Example: Direct connection (IQ-400, Panel address is #1)
NOTE At SW1, switch #8 must remain in the OFF position (right) for Direct
Connect communication.
To communicate from an IQ-400 to the MODEM, two cables must be fabricated: one from the
MODEM to the IQ-400 and another for the PC host to the MODEM. See the diagrams under
Cable Requirements.
NOTE The ON/OFF designation is in reference to the labels printed on the
IQ-400 PCB. Not the switch itself!
Page liii of 110 IQ-400 Installation Manual 33-10057-001-C
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