Introduction, Cautionary statements, Initial inspection – Campbell Scientific AL200 ALERT2 Encoder, Modulator, and Sensor Interface User Manual
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AL200 ALERT2 Encoder, Modulator, and
Sensor Interface
1. Introduction
The AL200 is an encoder, modulator, and sensor interface designed for use
both as a stand-alone device and as a peripheral to a Campbell Scientific
datalogger or third party Data Collection Platform (DCP). This device uses the
Automated Local Evaluation Real Time Protocol version 2 (ALERT2) and can
operate as both a remote ALERT2 transmitter and as an ALERT to ALERT2
concentrator and repeater.
For more information on the ALERT2 protocol, refer to the National
Hydrologic Warning Council’s ALERT2 Technical Working Group website:
2. Cautionary Statements
•
GPS input gain, antenna gain less conductor losses, should not exceed 25
dBm.
•
If protecting GPS input with coaxial surge protector, ensure that the
protector does NOT block DC voltages.
•
Ensure maximum protection against electrical transients/surges. Install
coaxial surge protection on all antenna runs. Keep RS-232 and CS I/O
connections short.
•
The AL200 is NOT powered over CS I/O.
•
When powered over USB, the AL200 will not power up either the radio or
attached sensors.
•
The device driver for the AL200 must be installed on your computer
before you can connect to the AL200 via USB. See Appendix E, AL200
USB Driver Installation Instructions, for instructions on installing the
device driver.
•
Device Configuration Utility 2.05 or higher is required to configure the
AL200. The latest Device Configuration Utility can be downloaded from
our website,
3. Initial Inspection
Inspect the AL200 for any obvious signs of damage upon receipt. For each
AL200, the following items should be accounted for:
•
QTY 1, AL200
•
QTY 1, 2-pin mating screw terminal connector (pn 7843)
•
QTY 2, 5-pin mating screw terminal connectors (pn 28750)
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