Precision Digital PD6830 - Manual (Page 46)

PD6830 Pulse Input Rate/Totalizer Instruction Manual
46
Contact Debounce Filter (FiLter)
The filter function (FiLter) can be used for applications where the meter is set up to
count pulses generated by switch contacts. There are two settings, HI (high speed)
and LO (low speed). High speed disables the contact debounce filter and allows any
pulse of the minimum specified width for the input wired. Press ENTER when LO is
displayed to enable the filter function. Program the filter value for the maximum fre-
quency of the true pulse signal in Hz that is expected plus a small margin. In most
applications, a setting of 40 will be sufficient to debounce a contact closure, yet allow
a pulse train up to 40 Hz.
Low-Flow Cutoff (CUTOFF)
The low-flow cutoff feature allows the meter to be programmed so that the often-
unsteady output from a transmitter at low flow rates, always displays zero on the
meter.
The cutoff value may be programmed from -99999 to 99999. Below the cutoff value,
the meter will display zero. Programming the cutoff value to zero disables the cutoff
feature.
Output Internal Calibration (OCAL)
This feature is only used at the factory and for diagnostic purposes. It is not
recommended to access this menu without instruction from technical support.
Backlight (BAKLITE)
The Backlight menu is used to enable or disable the backlight. This feature is
particularly important for the battery-powered models with momentary backlight.
Information (INFO)
The Information menu is part of the Advanced features menu. It shows software
identification number and version number. To determine the software version of a
meter:
Go to the Information menu (INFO) and press ENTER button.
Continue pressing ENTER to scroll through the software release number and
software version.
Following the information display, the meter will exit the Advanced features menu and
return to run mode.