Table 9-1: Test Functions - Teledyne 6400A Instruction Manual

TAI Model 6400A SO
Table 9-1: Test Functions (Continued)
Test Function Factory Set-Up
SLOPE 1.0 ± 0.3
OFFSET <250 mV
HVPS 550 - 900 V
DCPS 2500 ± 200 mV
(table continued)
Analyzer Operator Manual, 02164, Rev. G
2
Comment
The slope can be thought as a gain term which determines the
steepness of the calibration curve.
The 6400A will operate normally even the slope is out of range,
however it is preferred within the range for optimum operation
of the analyzer.
Slope out of range could be due to:
Analog gain pot needs adjustment (see Section 9.1.6).
Poor calibration quality (see Section 7.10).
UV lamp not calibrated (see Section 9.1.6)
This is essentially identical to the stray light except it is
expressed in mV.
High offset could be due to:
Light leak.
Aging UV filter.
Contaminated reaction cell.
Pneumatic leak.
Poor calibration quality.
This represents the scaled-up HVPS programming voltage to
the HVPS. The design of the HVPS precludes taking a single
reading that indicates the health of the supply. Refer to the
HVPS Troubleshooting Section 9.3.10 for a procedure for
testing the HVPS. This TEST function is used primarily to set
the HVPS voltage value and the reading should be very stable
and constant. A value not in the 400 to 900 volt range indicates
problems with the HVPS supply.
DCPS is a composite of the +5 and ± 15VDC supplies. It has
been arbitrary set at 2500 ± 200mV. If it is not in this range one
of the voltages in the supply is not working. Check the
procedures for diagnosing the Power Supply Module.
9-7