Geist monitor A2D User manual
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GM1222
Analog to Digital Converter – Quick Start Guide
Part Number: A2D
The A2D allows you to interface an analog sensor to a Plug-n-Play port. It is
compatible with the Watchdog 15/100 environment monitors and Geist
Upgradeable PDUs. It is also compatible with R-Series PDUs with v5.0.2 or
newer firmware, and will support up to 16 sensors on those units.
1. To connect your analog device to the A2D, just attach the common wire to
terminal “C” and the remaining wire to terminal “1”.
2. Using the RJ11 wire supplied, connect the A2D to your digital monitoring
device, such as the Watchdog 100.
You may daisy chain multiple A2D units as shown above. The number of
units that can be daisy chained is limited by the digital device you are using.
For example, the Watchdog 15/100 systems can monitor up to four A2D
units. WD15/100 and GU require firmware v3.0 or newer.
The screen shot above shows the GUI of a Watchdog 15,
with the configuration window open for naming.
The screen shot above shows the GUI of a Watchdog 15
with the configuration window for the sensor open for
naming the sensor. It has identified the unit as an A2D
automatically.
Geist Americas
800.432.3219
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Geist DCIM
1.877.449.4150
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Geist Europe
+44. (0) 1823.275100
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Geist Asia
China
+86.755.86639505
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GM1222
Here are some of the dry contact type sensors that can be utilized with the A2D Convertor:
• Door Position
• Power Failure
• Water Sensing Cable
• Flood Sensor
• Isolated Voltage
• Smoke Alarm
• Industry Standard 0-10V or 4-20mA
Specifications
Input Rating
0-10VDC, 4-20mA, or dry contact
Operating Temperature
-20°C to +75°C (-4°F to +167°F)
Operating Altitude Limit
3,050m (10,000ft) above MSL
Operating Relative Humidity
5-95%
Connections
Digital In, Digital Out & Analog In
Enclosure Size (LxWxH)
57.15mm x 27.20mm x 23.49mm
(2.250in x 1.071in x 0.925in)
Mounting Hole Size
6.35mm (0.25in)
Cable Type
Includes a 3m (10ft) or 15m (50ft)
uplink cable to connect to the host
Cable Length
3m, 15m (10ft, 50ft)
Compatibility
Watchdog 15/100 and Geist Upgradeable PDUs with firmware v3.0 or greater.
Also compatible with R-Series PDUs with v5.0.2 or newer firmware
