Maintenance
3500/42 Operation and Maintenance
190
When increasing or decreasing the zero position voltage, you are actually
mapping the monitor full scale range to a portion of the transducer linear range.
The zero position voltage adjustment range is dependent upon the full-scale
range of the proportional value being adjusted, the transducer scale factor, and
the transducer Ok limits. The following example shows how these parameters
are related to the zero position voltage range.
Channel Pair Type:
Thrust Position
Direct Full Scale Range:
-40-0-40 mils
Transducer Type:
3300 8mm
Scale Factor:
200 mV/mil
Ok Limits:
-19.04 (upper)
-1.28 (lower)
5.2.3
Adjusting the Zero Position
1. Connect the configuring computer to the rack using one of the methods listed
in the 3500 Monitoring System Rack Configuration and Utilities Guide (part
number 129777-01).
2. Run the Rack Configuration Software.
3. Initiate communication with the rack by clicking on the Connect option in the
File menu and then selecting the connection method that you used in step 1.
4. Upload the configuration from the rack by clicking on the Upload option in the
-1.28
-19.04
-10.16
-9.33
-10.99
Lower Ok Limit
Upper Ok Limit
Max Zero Adj
Min Zero Adj
Center of Range
Position
Range
-20
-10
0
10
20
30
-2.99V
40
-30
-40
-18.99V
Scale at max
zero adj
-20
-10
0
10
20
30
-1.3
40
-30
-40
-17.
Scale at min
zero adj
Zero
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