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2.3
HMR3000 Connection Diagram—Computer RS232 to HMR3000
Unregulated Supply
ac adapter
Regulated Supply
Regulated voltage
source
2.4
Electrical Connections
Connect the cable between HMR3000 and a COM port of the IBM compatible computer.
Supply power to HMR3000 (6-15V at the unregulated power input or 5V regulated).
If you purchased a HMR3000 Demonstration Kit, use the power and interface cable to connect between HMR3000 and
your computer's COM port. Make sure the line voltage selection (110 or 220V) in the adapter is appropriate and that 6
Vdc or higher output voltage (<15V) is selected.
R-232 computer pins
RX 2
TX 3
GND 5
RS-232 computer pins
RX 2
TX 3
GND 5
Figure 1. Interface and power connections for RS232 devices
900240 Rev. B
HMR 3000 PINS
6-15 Vdc
HMR 3000 pins
5 Vdc
3/01
2 TX
3 RX
5 GND
9 V+
2 TX
3 RX
5 GND
8 V+
page 2
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