ConneXions CX9DC DC power, Two Port Version
CX9DC Issue
1
Page
7 of 13
Section 2: System Operation
Confirmation of power connection is by way of the red LED on the base of the transcoder
console.
Confirmation of transmit is provided by way of the momentary green LED on the base of the
transcoder console.
Sending data in the correct format (see Technical Section,
Calling Pagers
) will invoke
transmitted messages to the relevant pagers.
Problems and Fault Finding.
1
Check and re-check the data cable connections. This, together with an incorrect
signalling format, result in more faults than any other problem.
2
Check that the communications baud rate of the host equipment matches that of the
Connexions COM ports. The default baud rate settings on the Connexions are:
COM1 = 1200 baud, COM2 = 9600 baud (check configuration data supplied with
your order, see label on inside of chassis).
3
Check that the pagers are at least 3 metres from the transmitter and aerial.
Under certain conditions it is possible to flood the pager receivers and corrupt the
data
received.
4
Check that the pagers have the battery installed with the correct polarity and are
correctly powered up. Check the pager baud rate and frequency matches the
Connexions transmitter (see label on inside of chassis plate).
5
Check that the red power LED on the base of the transcoder is lit. If not, remove the
power cord and check that 12V DC is available from the source supply.
6
Check that the green LED lights for the duration of the transmission. If not, go back
to the data cabling and re-check the signal format.
7
Check that the aerial is correctly installed.
IMPORTANT: Isolate mains before removing cover. Internal access and adjustments strictly
limited to authorised service personnel only.
Radio Transmission Baud Rate
This is set at the factory to suit the pagers supplied and will normally be set at either 512 or
1200 baud. Please refer to the separate configuration sheet and/or delivery note supplied
with your unit.
