M9110Ah Internal Variables - Teledyne 9110AH Instruction Manual

TELEDYNE Model 9110AH NO
9.1.3.4 Ozone Gen Power
This diagnostic manually turns the power off and on to the ozone generator. When the
M9110AH is powered up from a cold start the ozone generator is not immediately started. This
is due to the fact that humid air may be present in the generator cartridge. Humid air can
produce nitric acid aerosol which can permanently damage parts of the instrument down stream
of the generator. Using this diagnostic, it is possible to turn on the generator before the warmup
time has elapsed. If you turn the power on it will remain on after you exit the diagnostic.
9.1.3.5 Analog Output Step Test
The Step Test is used to test the functioning of the 4 DAC outputs on the V/F board. The test
consists of stepping each analog output 0-20-40-60-80-100% of the output. If the analog
outputs are set for 0-5V full scale the outputs would step 0-1-2-3-4-5 VDC. The stepping can be
halted at any value by pressing the key under the percentage on the front panel. When the test is
halted, square brackets are placed around the percentage value in the display. Pressing the key
again resumes the test. This test is useful for testing the accuracy/linearity of the analog outputs.
9.1.3.6 DAC Calibration
The Digital to Analog Converters (DAC) are calibrated when the instrument is set up at the
factory. Re-calibration is usually not necessary, but is provided here in case the V/F board
needs to be replaced and re-calibrated. The procedure for using the DAC Calibration routines is
in the Troubleshooting Section 9.3.3.1.
9.1.3.7 RS-232 Port Test
This test is used to verify the operation of the RS-232 port. When started, it outputs the ASCII
letter X for about 2 seconds. During the test it should be possible to detect the presence of the
signal with a DVM. A detailed procedure is given in the Troubleshooting Section 9.3.2.

9.1.4 M9110AH Internal Variables

The M9110AH software contains many adjustable parameters. Many of the parameters are set at
time of manufacture and do not need to be adjusted for the lifetime of the instrument. It is
possible to change these variables either through the RS-232 port or the front panel. Altering
the values of many of the variables will adversely affect the performance of the instrument.
Therefore it is recommended that these variables not be adjusted unless you have a clear
understanding of the effects of the change. Table 9-5 contains a description of each variable
and a brief description of its function.
Analyzer Operator Manual, 01620, Rev. F
X
9-17