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7.15.6
DIP Switch Settings, Continued.
Device Description
PANASONIC TIME-LAPSE VCR
MITSUBISHI TIME-LAPSE VCR
JVC TIME-LAPSE VCR
DEDICATED MICROS MULTIPLEXER
7.15.7
Alarm Sense Setup (SW1 4-way DIP switch)
The RD490 module provides eight individual alarm sense inputs, one for each device
being controlled. Generally these alarm inputs are used to wire connect to the VCR to
detect a NO-RECORD or END-OF TAPE status condition.
Threshold Level
To detect the changing voltage levels (representing the status condition required) will
need a threshold voltage to be set. A lower voltage that the threshold would be one
logic state, while a voltage greater than the threshold setting would be the other logic
state.
For detecting 5 volt logic signals, use the threshold setting of 3 volts. For detecting a 12
volt supply rail, use the 6 volt threshold setting. The threshold setting used should be as
close to the middle of the voltage swing provided by the signal being detected.
Rev. C
RS-232 Operating Mode (SW2, 8-way DIP switch)
CAUTION: Other device selections are not defined and
will return a FATAL-ERROR display of (2)...Device Not
Found.
CAUTION: For RD490 modules with the earlier V3.01
firmware, the JVC time-lapse VCR is not supported. The
Dedicated Micros Multiplexer mode was defined in that
position of the operating mode DIP switch table (i.e.
SW1=OFF, SW2=ON, SW3=OFF, SW4=OFF).
The RS-232 communication protocol for the DEDICATED
MICROS MULTIPLEXER is 9600 baud, NO parity, 8 data
bits and 1 stop bit. For all other RS-232 devices the
communications protocol is 1200 baud, NO parity, 8 data
bits and 1 stop bit.
Threshold level
3 volt
6 volt
9 volt
12 volt
7.15-5
SW-1
SW-2
SW-3
OFF
OFF
OFF
ON
OFF
OFF
OFF
ON
OFF
ON
ON
OFF
SW-1
SW-2
OFF
OFF
ON
OFF
OFF
ON
ON
ON
SW-4
OFF
OFF
OFF
OFF
HMXMU001018
10/06
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