Data Sheet
QPRO Technical Data Sheet
Document 1137-0901, REV K 25
4.1.5 RS-232 Ports
The QPRO has three (Iridium and Inmarsat) or four RS-232 (Orbcomm and Globalstar) serial ports.
1) The Main Transport Socket (MTS) Port implements QUAKE’s Communication Protocol (QCP).
2) The Logger Port provides diagnostic data for the user and the ability to debug and configure the
custom application.
3) The third and fourth serial ports are available depending on the specific QPRO model. See individual
port descriptions for additional information.
All serial ports support baud rates up to 115.2 Kbps. Note that the AUX port maximum speed is 57600
bps. All ports are protected against shorts to both the BATT+ and BATT- lines. The serial ports meet the
standard voltage level for RS-232 operation. The chart below shows the relationship between modem type
and serial port availability.
Figure 4-8, Serial Port Availability
• ITS Serial Port- Main Transport Socket port is an RS-232 port which implements the QUAKE
Communications Protocol (QCP). For QPRO models that support ORBCOMM this port also supports
the ORBCOMM Serial Interface (OSI).
• Logger Serial Port – RS-232 3-wire used for debugging and logging of system data/performance.
• AUX Serial Port – RS-232 3-wire can be used by application developers on QPRO models that do
not include the Iridium or Inmarsat satellite feature. Note that the AUX port maximum speed is
Serial Ports
GSM
+ G
P
S
+
OR
BC
O
MM +
RE
L
AY
S
GSM
+
GP
S
+
I
RI
D
IUM
+
R
EL
A
YS
G
PS
+ I
RI
DI
U
M
GPS + ORBCOMM
G
SM +
GP
S
3
G +
G
PS
+
O
R
BC
O
MM
+ R
EL
A
YS
GS
M
+
GPS + INMARSAT
MTS Port
1
1
1
1
1
1
1
Logger Port
1
1
1
1
1
1
1
AUX Port
1
0
0
1
1
1
0
GSM (Firm w are Update) (3G if Applicable)
1
1
0
0
1
1
1
GSM or may be used as External Serial
Connection
0 0 1 1 0 0 0
Total
4
3
3
4
4
4
3
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Do not copy (See last page for obligations)
Warning: There are important hardware differences between various
Q4000/QPRO models depending on the part number/network. Developers
who plan to use multiple network configurations with Q4000/QPRO hardware
should ensure that their application will run across all platforms.
For example, the AUX port is not available in Iridium and Inmarsat networks.
Developers planning to use serial ports must be aware that the AUX port is
not available on all configurations of the Q4000/QPRO. Information on the
availability of serial ports is contained in 2.1, QPRO Available Configurations.