Cooper Instruments & Systems DFI 1650 Multi-Channel Digital Force Indicator - Manual (Page 71)

CF 66 65 Rev. C 2/05
Use the DIAGNOSTICS->DAC FULL SCALE and DIAGNOSTICS->DAC ZERO SCALE menu items to force the
Analog Output to a known output. Then, adjust your readout device, panel meter, PLC or data acquisition system
to match.
Check the output selection jumpers; see “Output Selection”.
Check the “DAC SETUP->DAC.ZERO-SCALE” and “DAC SETUP->DAC FULL-SCALE” menu items.
Sensitivity to EMI/RFI
To obtain maximum immunity to electromagnetic or radio frequency interference, make certain that the shield of the
cable is connected to ground/earth only at the readout device. The shield of the cable should not be connected to
the instrument.
15.0 SPLIT DISPLAY VIRTUAL CHANNEL
15.1 Features
The Split Display Virtual Channel allows the display of two track, peak or valley values from any two channels at the
same time. One value is displayed on the left side of the display, and another value is displayed on the right side.
The display setup used to format each value is inherited from the source channel of the value.
Split Displays are most useful on a chassis with a 16-character display such as the DFI 1550, DFI 1650 and DFI
1650PT. The quad-line, 20-character display of the DFI SC3004, however, already allows an Input Channel to
show its own Track & Peak, Track & Valley or Peak & Valley values on the display at the same time. Thus, a Split
Display Virtual Channel is not generally used on a DFI SC3004.
15.2 Wiring
A Virtual Channel exists in software only; it does not occupy a physical slot inside of the instrument’s chassis.
However, a Virtual Channel does require a channel number.
There is no rear-panel connector for a Virtual Channel.
15.3 Setup Procedure
If you are not familiar with operating the instrument in the SETUP menu mode, see “SETUP Menu Mode”. A listing
of all menu items is given in the “Setup Menu Reference” in Chapter 18.
Step 1: Enter the value to be displayed on the left side with LEFT CHANNEL and LEFT SOURCE.
Step 2: Enter the value to be displayed on the right side with the RIGHT CHANNEL and RIGHT SOURCE.
15.4 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”.
LEFT CHANNEL Menu Item
This specifies the channel that is displayed on the left half of the split display.
LEFT SOURCE Menu Item
This lets you designate the data source of the channel monitored by the left half of the split display. 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.