Cooper Instruments & Systems DPG 100 Digital Pressure Test Gage - Manual (Page 22)

Table 7: Available Units for "M" Pressure Reference
Setting Engineering Unit I Comment
ADC for factory use only
PSI PSI
DUAL inHg {<0 PSI) or PSI > 0 PSI)
6.8
Analog Output Zero Scale ("A-LO") Item
The Analog Output Zero Scale ("A-LO”) menu item forces the analog output to either 0 Volts or 4 mA, then displays
"DONE" on the display.
For more information on trimming the analog output, see "Trimming Of Analog Outputs" in Section 5.6.
6.9 Analog Output Full Scale ("A-HI ") Menu Item
The Analog Output Full Scale ("A-HI”) menu item forces the analog output to either 5 Volts or 20 mA, then displays
"DONE" on the display.
For more information on trimming the analog output, see "Trimming Of Analog Outputs" in Section 5.6.
6.10 Internal Firmware Version ("VER") Menu Item
The Internal Firmware Version ("VER") menu item displays the part number and version number of instrument's
operating program. The firm-ware part number and version number are of the form:
084-1087-011.00
Where the "084-1087-01" is the part number, and the "1.00" is the version number.
Since this information is too long to fit on the 4 digit-display, pressing either the [Hi/Lo] or [Clear] buttons will scroll
through this information 4 characters at a time.
CHAPTER 7 TROUBLESHOOTING
7.1 Introduction
This chapter provides information on correcting common problems that may be encountered operating and
calibrating the instrument.
7.2 Help Message Codes
If the instrument detects a problem during its power-on self-test, operation, or calibration, it will alert the user by
flashing the word "HELP" and an error message code number on the display. The instrument cannot continue
operation and you must turn the instrument off and correct the error.
"HELP 01”: Calibration error.
Analog to digital converter overrange.
One of the pressure points is above the calibration range of the instrument, or the sensor cable is not connected
properly.
"HELP 02”: Calibration error.
Analog to digital converter underrange.
One of the pressure points is below the calibration range of the instrument, or the sensor cable is not connected
properly.
"HELP 04” : Calibration error.
The applied pressures at any two calibration points did not differ enough.
DPG 100 19 Rev Feb 2001