Cooper Instruments & Systems DFI 1650 Multi-Channel Digital Force Indicator - Manual (Page 70)

CF 66 64 Rev. C 2/05
14.6 Analog Output Configuration
14.6.1 Identifying the Output Type
A DAC Output channel is available with one of two types of digital-to-analog (DAC) outputs: voltage or current.
You can determine which type of output a channel has by one of three ways:
Consulting the instrument’s System Calibration Sheet.
Examining the SYSTEM MENU->CONFIGURATION->CHANNEL nn TYPE menu item where nn is the number of
the channel. If the channel’s type is VOLTAGE DAC, it has a voltage output. If the channel’s type is CURRENT
DAC, it has a current output.
Examining the channel’s circuit board as shown in the figure below.
14.6.2 Channel Menu Items
The Analog Output can be driven by any channel’s track, peak or valley value.
See the “Channel Menu” section earlier in this chapter for a complete listing of SETUP menu items available on the
DAC.SETUP sub-menu.
14.6.3 Output Selection
Jumpers located on the channel’s circuit board determine what outputs are generated when the value selected to
drive the Analog Output (from the DAC.CHANNEL and DAC.SOURCE menu items) equals the DAC.FULL SCALE
and DAC.ZERO SCALE settings.
Figure 14-1: Digital-to-Analog Output Jumper Locations
DAC.ZERO SCALE DAC.FULL SCALE P31 J11
Output Output jumper jumper
CHANNELS WITH VOLTAGE OUTPUT
0-5V 2.5 Volts 5 Volts bottom open
0-5V 0 Volts 5 Volts bottom closed
±5V 0 Volts 5 Volts top open
0-10V 5 Volts 10 Volts middle open
0-10V 0 Volts 10 Volts middle closed
CHANNELS WITH CURRENT OUTPUT
4-20mA 4mA 20mA bottom closed
4-20mA 12mA 20mA bottom open
14.7 Troubleshooting
14.7.1 Error Messages
See “Error Messages” in Chapter 17 for information relating to error messages.
14.7.2 Common Problems and Solutions
Analog Output Incorrect
Make certain of the type of Analog Output (voltage or current) that the channel is equipped with; see “Identifying the
Output type”.