Fluke Biomedical 05-450 - Manual (Page 19)

Digital Doorway Monitor
Operator Controls and Setup
11
Dipswitch (under calibration cover)
When the calibration cover is removed, a four-pole dipswitch is accessible that
can activate or deactivate options. These four options are: CAL MODE, LATCH
ALARM
, RANGE, and SINGLE BEEP.
• Dipswitch 1: Switching the top CAL MODE switch to the right places the
instrument into calibration mode. Parameters can only be changed while the
instrument is in calibration mode. Calibration mode also changes the analog
output to full-scale so that the full-scale voltage may be set by the ANALOG
potentiometer. Calibration mode also slows the response time of the display
and increases the accuracy. If the display seems too erratic, leaving this
switch in the calibration mode during operation will help. Moving the CAL
MODE
switch back to the left locks the parameters and disables any further
changes.
• Dipswitch 2: The second switch, LATCH ALARM, changes the high alarm to
a latching alarm. This switch does not affect the low alarm, which is always
non-latching. When switched to the left, the high alarm is non-latching; the
alarm automatically turns off when the radiation level drops below the alarm
point. When switched to the right, the high alarm light and audio signals are
latched until either the LOW ALARM or HIGH ALARM button is pressed.
• Dipswitch 3: The third switch, RANGE, selects the range of the instrument.
To select the 0.1 <units> -999.9 <units> range, switch the RANGE switch to
the left. To select the 1 <units> -9999 <units> range, switch the RANGE
switch to the right.
• Dipswitch 4: Switching the fourth switch to the right places the instrument
into SINGLE-BEEP mode. This option limits the audio output to a single half-
second beep on LOW ALARM and HIGH ALARM. DET FAIL audio output
(steady tone) is not limited.