Specifications

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iCOMPEL Digital Signage - User Guide (V8.1.1)
Animations (typically in Flash or HTML with embedded JavaScript) have no upper limit to their processing requirements
and can overwhelm the iCOMPEL players processing resources. If this occurs, the Animation will typically run slow but
other Zones will continue as normal.
11.4 RS-232 technical reference
The pin assignment of the RS-232 9 way D-Plug is as follows:
Pin
Direction
RS-232 Name
Quiescent State
1
Input to iCOMPEL
DCD
Hi impedance
2
Input to iCOMPEL
RxD
Hi impedance
3
Output from iCOMPEL
TxD
-ve Voltage level
4
Output from iCOMPEL
DTR
-ve Voltage level
5
Sig. GND
6
Input to iCOMPEL
DSR
Hi impedance
7
Output from iCOMPEL
RTS
-ve Voltage level
8
Input to iCOMPEL
CTS
Hi impedance
9
Input to iCOMPEL
RI
Hi impedance
Electrical Interface
For historical reasons, The RS-232 standard uses a variety of terminology to describe its signal status, i.e.
Lowered = Negated = Logic 1 = -ve voltage = Off = Marking
Raised = Asserted = Logic 0 = +ve voltage = On = Spacing
The iCOMPEL uses voltage level in order to describe line status since this is the only explicit identification.
Inputs have:
hysteresis (generally of about 0.5V)
a threshold level of about +1.5V
an input impedance of about 5K Ohms connected to Gnd (defaults to a -ve voltage state with nothing attached)
an acceptable input range of +/-15V
Outputs have:
a voltage swing ranging from +/-5V to +/-12V (depends on hardware)
a source current drive capability of about 15ma (with output current limiting) (can drive LEDs/PIR modules and provide a
voltage for contact closure applications).