Retrotech DM-2A 用户手册

Retrotec Energy Innovations, Ltd.

DM-2A Mark II   2008-02-22

Appendix C

As you become familiar with using your DM-2A mark II gauge, you may have questions with 

its basic operations and/or functions or you may encounter a situation that seems out of the 
ordinary. There is often a simple answer or solution to solving common problems. 

Before contacting Retrotec technical support, review the answers to these frequently asked 

questions geared toward solving common difficulties:

   Nothing appears on the display screen when I turn on my gauge. Is my gauge 

damaged?

   Your Retrotec gauge is designed for maximum durability in the most rigorous usage 

scenarios. If nothing appears on the display screen after pressing the O

 keypad 

button, check for the following:

•  If running on battery power only, check that the batteries are installed (and 

installed correctly).

•  Turn the LCD Contrast button on the top side of the gauge to increase the 

display screen contrast.

•  Plug the AC power adapter jack into a power outlet and insert it into the port 

marked Power on the top side of the gauge and press the O

 keypad 

button again. 

   The test device I wish to use does not appear when I cycle through the device list by 

pressing the Device keypad button. How do I select my test device?

   The device you wish to use may be disabled in the Setup options. To enable a device, 

follow these brief steps:

1.  With your gauge on and running and from the main operational screen, press 

the S

 keypad button.

2.  Navigate the Setup menu selections and select Device Setup in the menu.

DM-2A Mark II Dual-Channel Pressure Gauge