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©Retrotec Inc. 2012
2.2 Gauge Overview
The Retrotec DM-2 mark II gauge has: a connections panel, a display screen, and a keypad. The
connections panel on the back of the gauge is where all external devices are connected to the DM-2.
The display provides information on the current test mode and/or setup, as well as the device status
and measurement values. The keypad is where the user inputs data to the DM-2, and controls the DM-
2 functions.
The Connections Panel
Figure 6. DM-2 back panel with pressure ports and electrical connections.
The connections panel has the following:
1. Control port
2. USB input
3. Reset button
4. Power input
Pressure Ports:
5. Input B (+)
6. Reference B (-)
7. Reference A (-)
8. Input A (+)
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