Campbell SAT ARGOS Manual de usuario Pagina 114

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ZENO
®
-3200 USER MANUAL
Coastal Environmental Systems (206) 682-6048
Page 106
The TGT-1 DE-25 port labeled GOES RADIO is connected to the ZENO
®-
3200 DE-25 port labeled AUX
SERIAL DATA, using the cable provided by Coastal Environmental Systems. This cable is not a
standard serial cable as it includes interface electronics. This interface includes the power supplied to the
GOES transmitter.
Figure 6-9. Telonics TGT-1 to ZENO
®-
3200 block diagram.
The ZENO
®
-3200 provides 12 VDC unregulated power to the TGT-1 over this cable. The interface box
also includes a lithium battery to provide backup power to the TGT-1, in case the ZENO
®
-3200 should
lose power for any reason. The reason for the battery backup is because the TGT-1 clock is used to time
transmissions, and the TGT-1 clock will reset if its power fails completely. While the ZENO
®
-3200 clock
continues to run if the power fails, it is not certified for GOES transmissions.
6.7.5. Campbell Scientific SAT HDR GOES Transmitter
Coastal Environmental Systems uses the Campbell Scientific SAT HDR GOES transmitter with the
RS232 interface. This unit has the following specifications:
Size 8.2” 5.5” 1.5” (no connectors), 9.0” 5.5” 1.5” (with connectors)
Weight < 2 lbs.
Frequency 400 - 403 MHz
Temperature -40°C to +50°C
Humidity 0 - 99% non-condensing
Current 4A typical during transmission (50 load); < 1 mA quiescent, 350 mA during
GPS fix.
Voltage 9.6 VDC to 16.0 VDC
Power: 7.9 Watts for 100 & 300 bps, 15.9 Watts for 1200 bps.
To meet the required timing accuracy, the SAT HDR GOES uses a built-in GPS receiver to obtain
positioning and timing for its real-time clock that manages the transmit window scheduling.
The Campbell Scientific SAT HDR GOES transmitter port labeled Auxiliary I/O RS232 (DCE) is
connected to the ZENO
®
-3200 DE-25 port labeled Auxiliary Serial Port using the cable provided by
Coastal Environmental Systems. (This cable is not a standard serial cable.) Power to the Campbell
Scientific SAT HDR GOES is not supplied by the ZENO
®
-3200. Power is connected separately to the
transmitter via the connector labeled Power.
6.7.6. ZENO
®
-3200 Configuration
The ZENO
®
-3200 supports either the Telonics or Campbell Scientific GOES radio communications on
COM2. The first step in configuring a ZENO to transmit using the GOES transmitter is to set COM2
accordingly.
From the User Menu, enter C{ENTER} to reach the Communications Menu. For the Telonics TGT-1, set
the COM2 port type to GOES, and the COM2 baud rate to 1200 or 9600 (to match the TGT-1 baud rate).
I/F box
ZENO
®
-3200
(AUX SERIAL DATA)
TGT-1
(GOES RADIO)
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