Cooper Instruments & Systems DFI 1650 Multi-Channel Digital Force Indicator - Manual (Page 12)

CF 66 6 Rev. C 2/05
3.3 RUN Mode
After the INITIALIZE mode finishes, the instrument enters the RUN mode, its normal mode of operation.
3.3.1 Display
DFI SC3004 and upper line of DFI 1550, DFI 1650, DFI 1650PT
The display will show a channel number on the far left, followed by the channel’s operation messages.
For example, a Strain Gage amplifier channel will use the format below:
1▲ 00000. PSIG ◊
where:
• Channel number: “1” is the channel number
• Value type: The next character indicates the nature of the following value. A blank character indicates the
display is being continuously updated by “tracking” the input signal to the channel.
• A ”▲“ character indicates the peak value (highest value seen since the [CLEAR] button was last pressed).
• A “▼“ character indicates the valley value (lowest value seen since the [CLEAR] button was last pressed).
• Data value: “00000.” Displays the value from the transducer in engineering units.
• Units label: “PSIG” indicates the engineering units being used (up to 4 characters).
• Tare indicator: A “◊“ symbol indicates tare is off; a “ “ symbol indicates tare is on.
Lower Line of DFI 1550, 1650, 1650PT
The contents of the display’s lower line is selected with the “DISPLAY MENU->LOWER MODE” menu item as
either displaying on a channel or indicating the status of Limits. See “Indicator Lights”, Section 3.3.6.
3.3.2 [VALUE] button
The [VALUE] button is not used by DFI 1550 in the RUN mode.
After the channel number, the next characters indicate which data value for the displayed channel is shown. There
are three (possibly four) data values available from each channel:
• (blank), tracking data value
• “▲”, peak data value, (highest value since the peak/valley detector was cleared)
• “▼“, valley data value, (lowest value since the peak/valley detector was cleared)
• “ ”, percentage of the Analog-to-Digital converter’s full-scale digitizing capability.
• This data value is only available when the channel’s “DIAGNOSTICS->DISPLAY ADC” menu item is set to
“ON”.
Pressing and releasing the [VALUE] button cycles through the available sources for data values for the displayed
channel.
3.3.3 [CLEAR] button
Pressing and releasing the [CLEAR] button will reset the peak and valley values of the channel being monitored by
the display to the track value. Additionally, any limits in the instrument that are “latched” will be reset.
The [CLEAR] button is not used by DFI 1550 in RUN mode.
To clear the peak and valley values of all channels simultaneously, use the System connector’s Function Input #2
pin. See “System Connector”, Chapter 5, for details.
To clear the peak and valley values of a single channel regardless of which channel is being monitored by the
display, use the channel’s AUX1 or AUX2 control pins on its connector. See the particular chapter regarding that
channel for details.
3.3.4 [CHANNEL] button
If the configuration of the instrument contains more than one channel, the left most characters of the display
indicate which channel the display is monitoring. Pressing and releasing the [CHANNEL] button will cause the next
channel to be displayed.