Service manual

MDS E-SCAN MONITOR DIAGNOSTIC VOLTAGES SELECTION
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5.8 Diagnostic Voltages Selection
The “Voltages” option results in the following display:
U1 Meas:
The voltage produced when
measuring a solution sample. It is
used by MPR E-Scan unit 1 to
obtain an interpolated value from
the calibration table that will
reflect an accurate displayed
solids reading.
U1 Temp:
A voltage that produces the
process temperature readout on
MPR E-Scan unit 1 as follows:
(Voltage - .5v) * 50 = Deg. C.
U1 Lamp:
A nominal voltage needed to maintain a signal of proper amplitude for MPR E-Scan unit 1 light
source.
U1 0-10:
An interpolated voltage based on MPR E-Scan unit 1 Meas. Anlg. Min. and Meas. Anlg. Max.
Output limits.
U1 +5:
MPR E-Scan unit 1 power supply. The +5 volt supply line has a +/- .5 volt tolerance.
U1 +15:
MPR E-Scan unit 1 power supply. The +15 volt supply line has a +/- 1.5 volt tolerance.
U1 -15:
MPR E-Scan unit 1 power supply. The -15 volt supply line has a +/- 1.5 volt tolerance.
Diagnostics Voltages Screen