Condec DLR3110 - Manual (Page 10)

6 DLR3110 Rack Mount Digital Pressure Calibrator Manual
2.6.1 Freeze Mode Specifications
The following bullet points outline general specifications for the DLR3110’s Freeze mode.
• The freeze input “freezes” the display for approximately five seconds on the rise and fall time of the
input (edge not level triggered) and can not be re-triggered.
• Input pulse > 100 ms required to guarantee detection.
• Freeze mode “freezes” the 6 digit numeric and LED bar displays in whatever mode it is in (for example,
Normal, Net, Min and Max mode).
• Alphanumeric display prompts FREEZE .
• During the “freeze” the front panel keys are inactive.
• Inputs are a +5 VDC logic level. Sinking current approximately 0.5 mA.
2.7 Min and Max Mode
The Min and Max mode is designed to capture and store the highest and the lowest pressure readings. These
values may be recalled at anytime in the normal operating mode by repeatedly pressing the
DISPLAY key until
the desired value is displayed. When either the minimum or maximum value is selected, the alphanumeric
display flashes between the mode (Min and Max) and its units.
NOTE: The Min and Max mode pressure data is automatically converted to any of the active conversion units by
stepping through the conversion units using the UP or DOWN arrow keys.
Both the Min and Max mode are independent of each other and are enabled (turned ON) in the Configuration
mode (see Section 5.11 on page 21).
2.7.1 Resetting Min and Max Values
To reset the stored minimum or maximum value:
1. Select the Min or Max display to be reset using the DISPLAY key.
2. Press the CE key. One of the following messages appears on the alphanumeric display: RESET MAX?
YES OR NO; RESET MIN? YES OR NO.
3. At the display prompt shown above, press the YES key to reset the value or press the NO key to abort
resetting the value.
NOTE: Min and Max data work with the standard pressure, not delta pressure data.
2.8 Remote Display Mode
The following describes the setup for connecting the optional six-digit remote display (PN 74683). The display
duplicates the DLR3110 six-digit front panel display for all ranges and units selected (see Figure 2-5 on page 7).
NOTE: Remote display does not show current unit or mode designation.
See Table 5-10 on page 24 for setting the following parameters:
Parameter Configuration
Port 1 SIMPLEX
Baud 9600
Parity EVEN
Port 1 Modify
delay 1 AUTO
t –d 1 OFF
data 1 COMPRESS
EOL 1 CR
SOt 1 NONE
EOt 1 NONE
Table 2-1. DLR3110 Parameters