© Microhard Systems Inc.
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3.0 Hardware Description
3.4.2 MHX Development Board Connectors & Indicators
3.4.2.1 Front
On the front of the MHX Development Board is the SERIAL DIAGNOSTICS port, CFG Button,
and the SYS Status, TX, RX, RSSI LED’s.
The
SERIAL DIAG (RS232)
port is used for two purposes:
•
online diagnostics and configuration at 115.2kbps (using MHS-supplied BLACK RJ45
-
DE9 cable (P/N MHS044000) and MHS software)
•
firmware upgrade (using MHS-supplied BLUE RJ45-DE9 cable (P/N MHS044010))
CFG Button (S1)
Holding this button depressed while powering-up the modem will boot the unit into
configuration mode: the default serial interface (rear DE9, RS232) will be active and set to
operate at its default serial baud rate of 9600bps.
Image 3-7:
MHX Development Board Indicators
Drawing 3-18:
MHX Development Board Indicators
The SERIAL DIAG port is
NOT
an Ethernet port.
The SERIAL DIAG port
does not support AT
commands.
Table 3-5: SERIAL DIAG Port Cable Pin-outs
RJ45
Pin #
Name
MHS044000
DE9 Pin #
MHS0044010
DE9 Pin #
1
4
2
Diag RXD
2
3
Diag TXD
3
4
3
5
SG
5
5
6
2
7
RESET*
8
7
* active high
Caution:
Nano Series
“LC” versions do not
support the Diagnostics
Port
RSSI
RX
TX
CFG
SYS Status
