Dsp Board - MultiTrode MultiSmart Installation & Operation Manual

7.4.3 Serial Ports
There are three RS232 (DB-9 - male) serial ports on the CPU Board. Any of these ports can be assigned to
a communications channel. All I/O lines are implemented (for hardware version
The MultiSmart serial ports use the standard RS232 pin outs as tabled below. When connecting to say a
laptop, a cross over cable is required – as a minimum RX, TX and GND are required.
Pin Name
1 Carrier Detect
2 Receive Data
3 Transmit Data
4 Data Terminal Ready
5 System Ground
6 Data Set Ready
7 Request to Send
8 Clear to Send
9 Ring Indicator
Table 2 – Serial Port Pin Outs
7.4.4 Flash Memory Card
The flash memory card socket takes standard CF memory cards. MultiTrode recommends the use of
SanDisk CF cards as these have been tested by MultiTrode. Some brands may not function correctly. The
CF card can be used in a number of ways:
As extra storage space for data logging.
•
To install new firmware.
•
Can be used to load or save configuration files from/to the MultiSmart unit, rather than configuring
•
through the User Interface Display.
WARNING:
Before removing the compact flash card, you must press the yellow save CF data button. Failure
to do so may cause corruption of data or damage to the flash card.

7.5 DSP Board

The Digital Signal Processor board handles the I/O, communicates between multiple I/O modules and is
where the main power supply is connected.
7.5.1 Power Supply Connector
The 12-24VDC power supply is connected into the DSP board as shown below:
Figure 45 – Connecting the power supply
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MultiSmart Installation & Operation Manual
Abbrev Direction
CD Input
RX Input
TX Output
DTR Output
GND -
DSR Input
RTS Output
CTS Input
RI Input
or later).
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MultiSmart_IO_Manual_A4_v2-22_R15.doc