Data Sheet

Q4000 Technical Data Sheet
Document 1135-0902, REV K 24
• MTS Serial Port – RS-232 port which implements the QUAKE Communications Protocol (QCP). For
Q4000 models that support Orbcomm this port also supports the Orbcomm Serial Interface.
• Logger Serial Port – RS-232 3-wire used for debugging and logging of system data/performance and
programming firmware and custom applications.
• AUX Serial Port – RS-232 3-wire can be used by application developers on Q4000 models that do
not include the Iridium satellite feature. Note that the AUX maximum speed is 57600 bps.
• GSM Serial Port- RS-232 3-wire can be used on Q4000 models which include the GSM feature for
firmware updates. For Q4000 models that do not include the GSM feature this port can be used by
the application directly.
• GPS Serial Port- RS-232 3-wire can be used on Q4000 models which include the GPS feature to
externally monitor NMEA strings. For Q4000 models that do not include the GPS feature this port
can be used by the application directly.
4.1.5.1 MTS
The following RS-232 lines are available for the MTS port: RX, TX, DTR, CD, and DSR. The signal names
are from the perspective of the DTE. The interface protocol for this port complies with the RS-232 standard
serial specification.
4.1.5.2 DTR
The DTR line is an RS-232 input that is used in the power supply wake-up circuitry to wake up the Q4000
from sleep mode. In order to wake the Q4000 via DTR, a 1.8 Volt rise on the DTR line with a rise time of less
than 100µs is required. MTS_DTR is a software readable digital input. The low and high thresholds are 0.8
volts and 2.0 volts respectively.
NOTE: If DTR is de-asserted, you must wait at least 3.5 seconds before re-asserting the DTR to allow
enough time for a controlled power down sequence to occur.
4.1.5.3 Logger
This port is typically used for logging and debugging activities. See the Q4000/QPRO User’s Manual for
details of the Logger port operations.
Interface Connector Electrical Specifications 4.1.6
Note: All lines are protected against over-voltage and transients; the Max (Min) Nominal Voltage column is
intended to provide information about the voltage limits for normal operation. See the following table for
pinout information.
Table 4-1, Interface Connector Electrical Specifications/RF Connections
Pin
Signal
Type
Voltage
(Min/Max/
Nominal)
VDC
Max Output
Current
Notes
1
U
BATT (+)
Power 6/32/12 See table 1, 5
2
U
BATT (+)
Power 6/32/12 See table 1
3
UBATT (
-
)
Ground
4
UBATT (
-
)
Ground
5
3V
5
_
500MA
Continuous Output +/- 1% 650mA 4
6
3V
5
_
500MA
Continuous Output +/- 1% 650mA 4
7
GSM_RX_RS232
Input +/- 15 -
8
AUX_
TX_RS232
/
DPL_
T
X_RS232
Output 5
9
GSM_TX_RS232
Output
10
AUX_
RX_RS232
/
DPL_
R
X_RS232
Input 5
11
GND
Ground
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