Cooper Instruments & Systems DPG 100 Digital Pressure Test Gage - Manual (Page 23)

"HELP 23”: Self-test error.
The engineering unit conversion that you selected cannot be rendered on a 4 digit display. For example, consider
the case of an instrument with a range of 10000 PSI. If you were to select mbar in the Engineering Units ("UNIT”)
menu item the instrument would signal this error. This is because 10000 PSI equals 689475 mbar, which cannot be
shown on a 4 digit display.
"HELP 27”: Non-volatile memory write error.
“HELP 28”: Non-volatile memory read error.
"HELP 29”: Non-volatile memory verify error.
"HELP 39”: Non-volatile memory version mismatch.
"HELP 40”: Analog-to-digital converter not ready. Turn the instrument off and on again.
7.3 Troubleshooting Hints
Verify that the power source is operating correctly. Make sure the batteries are fresh or that the external supply is
wired correctly.
Verify that the sensor cable is connected correctly. The correct orientation of the sensor cable is shown in Section
4.4.
The sensor and the electronics are a matched set. Do not, under any circumstances, exchange sensor and
electronics on two different instruments.
The [Zero] button must be held down for 5 seconds before the display will be zeroed. This is in order to prevent
unintentional zeroing of the display.
If "-EO-" is displayed when a button in pressed, this indicates that the button has been disabled with the Enable
Options ("EO") menu item. See "Enable Options ("EO") Description" in Section 6.5
for more information.
CHAPTER 8 POWER ADAPTER SPECIFICATION
DPG 100 20 Rev Feb 2001