Ludlum Measurements 25024424, Manual

Page: 30 / 91

26 CHAPTER 5. NORMAL OPERATION
MODE button: A long press (0.5 seconds or more) will allow the instrument
to toggle the response rate. The instrument can toggle between Auto-Fast and
Auto-Slow or Fixed-Fast and Fixed-Slow. Within 2 seconds, the new response
rate will be displayed on the screen. If the response time is user defined, a long
press of the MODE button is ignored.
ò
Alerts and Alarms are non-latching in RATE mode. They will clear automatically
if the reading falls below the user-defined threshold.
Figure 5.3: RATE mode display.
5.6 MAX Mode
While in MAX mode, the highest detected count rate (since the last reset) is displayed. The
MAX icon is displayed to indicate when in MAX mode.
MAX mode is always running in the background on power-up. While in other modes or units,
the maximum rate encountered will be stored.
OK button: The first press of the button mutes click audio (or other activity
audio). The second press of the button resets max value to zero and re-enables
click audio. If there are alerts/alarms, the alert/alarm acknowledgement takes
precedent and will register the button press instead (see Alerts and Alarms on
page 24).
MODE button: A long press (0.5 seconds or more) will allow the instrument
to toggle the response rate. The instrument can toggle between Auto-Fast and
Auto-Slow or Fixed-Fast and Fixed-Slow. Within 2 seconds, the new response
rate will be displayed on the screen. If the response time is user defined, a long
press of the MODE button is ignored.
ò
Alerts and alarms in MAX mode latch with the display
Ludlum Measurements, Inc.