Teledyne 4030 - Total Hydrocarbon gas analyzer - Manual (Page 53)

Operation
Teledyne Analytical Instruments 51
4.4.14 Analog output Adjustment
The software in this instrument provides a way to enter to manage
the analog output of the analyzer FOR ANALOG CHANNEL 1
ONLY. To access the offset function:
<▲▼>
From the MAIN MENU, scroll to the ANALOG
ADJUST function using the UP/DOWN keys.
<Enter> Pressing activates the function and takes you to
the next screen.
ANALOG-OUT ADJUST
-----------------------
CH1 Offset: 0
CH1 Gain: 0
CH1 Select: THC
CH2 Select: R-ID
-----------------------
<Enter> Use the key to move over to the Offset field.
<▲▼> Use the UP/DOWN keys to change each digits value.
<Enter> Use the key to save the value.
<Escape> Use the key to revert to the original value.
Use the same procedure to set the gain of the instrument. After the
last digit is entered, the final press will accept the gain value.
The values entered do not have explicit units of current or voltage.
Adjustment should be gauged using a voltmeter or current meter
attached to the analog output. When the ANALOG ADJUST menu is
entered the following is displayed:
________________________________________________
-> CH1 mA Offset: 0
CH1 mA Gain: 0
________________________________________________
When the arrow is on the Offset, or when the user presses to
modify the offset, the analog output is 4mA plus a value that is
proportionate to the number indicated to the right of 'Offset:' That
number may be modified –500 to 500.
When the arrow is on the Gain, or when the user presses to
modify the gain, the output is 20mA scaled by the value to the right of