CDI Torque MULTITEST Government - Manual (Page 61)

4-13
Using the MULTITEST Toque Calbration System
How to Use Analog Output (Rear Panel BNC
Connector)
Analog Output on the MULTITEST Indicator provides a real time
voltage level that is directly proportional to the torque/force
measurement applied to the transducer. It is useful for direct
driving equipment such as analog plotters and chart recorders,
or interfacing to a computer/controller with analog to digital
(A/D) data acquisition capability. Maximum output loading must
be less than 5 mA.
The output varies between approximately +1.8 volts, full
clockwise (CW) torque/force applied and approximately -1.8
volts, full counter clockwise (CCW) torque/force applied. Zero
offset is within ±100 mv. Linearity is better than ±1% of
reading.
When used with the 4-in-1 transducer, zero output
varies with the scan of the four transducers. Select
one of the four by applying at least 5% of its full range
torque to it. Press ENTER to return to scanning.
1. To program the MULTITEST Indicator, refer to Chapter
3—Set Up and Programming. Use SET HIGH and SET
LOW limit alert, data STORE, display CLEAR, printer
SEND and STATistical analysis features.
2. Press MODE to select the TRACK mode.
3. Connect the recording or monitoring equipment to the
ANALOG OUTPUT port using a BNC coaxial connector.
4. With no torque applied, measure the ANALOG OUTPUT
voltage and adjust or program your equipment for zero.
5. Apply full range torque to the transducer in the CW
direction as shown on the MULTITEST Indicator LED
display.
6. Measure the ANALOG OUTPUT voltage and adjust or
program your equipment to display the full range torque
value.
7. Apply full range torque to the transducer in the CCW
direction as shown on the MULTITEST Indicator LED
display.
8. Measure the ANALOG OUTPUT voltage and adjust or
program your equipment to display the full range torque
value.