Campbell SAT ARGOS Bedienungsanleitung Seite 103

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Seitenansicht 102
ZENO
®
-3200 USER MANUAL
Coastal Environmental Systems (206) 682-6048
Page 95
The ZENO
®
-3200 radio and your host must have good Line of Site (LOS) for
effective radio communication.
The CCSAIL protocol should be used to download data because of its built-in checksum for error
checking
115
for either unidirectional or bi-directional communication.
The X-modem file transfer protocol is also good for noisy communications links because it can only be
used with two-way radio communication since it is bi-directional.
If you are using unidirectional communication, you cannot use the X-modem
file transfer protocol!
Radio transmitters use considerably more power than the
Zeno
®
-3200 by itself!
Coastal Environmental Systems typically uses radios that transmit at 2 Watts, requiring 1 Amp at 12 VDC
during transmission. The typical transmitter duty cycle
116
is 30% to 50%.
Coastal Environmental Systems does not recommend downloading large
amounts of data via radio because the radio transmitter could be damaged.
6.6.1. Connecting the Radio To The ZENO
®
-3200
It is important to note that your ZENO
®
-3200 must be equipped with an
internal, properly tuned FSK
117
Modem Chip in order to use radio
communications.
Both unidirectional and bi-directional radios are connected to the ZENO
®
-3200 using COM1. Several
pins on the Auxiliary Serial Port
118
are used to connect the radio to the ZENO
®
-3200:
115
Refer to Section 4.6.
116
Duty cycle is the percentage of time that a radio can transmit before it needs to rest. If a radio transmits for 10
seconds and its duty cycle is 30%, then it must rest for at least 23 seconds.
117
FSK stands for Frequency Shift Keying.
118
The Auxiliary Serial Port is located on the ZENO
®
-3200 Front Panel, refer to Section 2.1.
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