Cooper Instruments & Systems DFI 1650 Multi-Channel Digital Force Indicator User Manual
Page 69
CF 66
63
Rev. C 2/05
14.4 Specifications
Analog Output
Voltage Range (voltage output channels) 5, ±5 or 10 VDC
Contact Rating (current output channels) 4-20 mA
Source Any channel’s track, peak or valley value
Isolation 500V
Resolution 12
bits
Update Rate Depends on how many channels are installed in the instrument
14.5 Channel Menu
Each DAC Output channel is configured and calibrated via its channel menu. Detailed instructions on operating the
instrument in the SETUP Menu mode can be found in “SETUP Menu Mode”. A diagram of all menus is located in
“Setup Menu Reference”.
14.5.1 DAC SETUP Sub-Menu
This sub-menu contains four items that controls the analog output of the channel.
DAC.CHANNEL Menu Item
This chooses which channel will drive the Digital-to-Analog Converter (DAC) output.
DAC.SOURCE Menu Item
This designates the data source of the channel monitored by the analog output. Each channel has three data
sources: the live tracking value (TRACK), its highest value (PEAK), and its lowest value (VALLEY).
The options for this menu item are:
• “TRACK” means the live tracking value of the channel.
• “PEAK” means the highest value of the channel since the peak/valley detector was last cleared.
• “VALLEY” means the lowest value of the channel since the peak/valley detector was last cleared.
DAC.ZERO-SCALE Menu Item
This specifies what value, in engineering units, corresponds to zero output on the Analog Output.
“Zero output” might be 0 Volts, 2.5 Volts, 5 Volts, 4 mA or 12 mA depending on if the channel has a voltage or
current output and how it is configured. See the “Digital-to-Analog Output” section of this chapter for details.
This menu item is not automatically updated by another channel’s Signature Module equipped transducer.
DAC.FULL-SCALE Menu Item
This specifies what value, in engineering units, corresponds to a full output on the Analog Output.
“Full output” might be 5 Volts, 10 Volts or 20 mA depending on if the channel has a voltage or current output and
how it is configured. See the “Digital-to-Analog Output” section of this chapter for details.
This menu item is not automatically updated by another channel’s Signature Module equipped transducer.
14.5.2 DIAGNOSTICS Sub-Menu
DAC FULL SCALE Menu Item
When this menu item is selected, the Analog Output of the channel is forced to its full-scale output, then DAC
UPDATED is displayed. This is useful when calibrating or trimming the readout connected to the Analog Output.
DAC ZERO SCALE Menu Item
When this menu item is selected, the Analog Output of the channel is forced to its zero-scale output, then DAC
UPDATED is displayed. This is useful when calibrating or trimming the readout connected to the Analog Output.