9
8
7
6
5
5
4
3
2
1
Fig. 1-1 1917-R Front Panel
1.5 Front Panel Description
1 -
Backlight / I/O
Control Key
Switches the 1917-R on and off (press for at least 2 seconds to turn off the 1917-
R) and toggles backlight on and off when the 1917-R is on (backlighting is
available only when the 1917-R is powered by the external 9 VDC power supply).
Backlight status is memorized by the 1917-R.
If no detector head is connected when the 1917-R is powered on, the message “No
Detector” will be displayed. Turn off the 1917-R; connect the detector to the
Probe Input Jack (see section 1.4) and turn the 1917-R on again.
If the detector is not recognized by the 1917-R, the message “Bad Detector” will
be displayed. Make sure you use a detector head that is compatible with the 1917-
R (see Table 1.2 for the list of compatible detector heads).
2 -
Speed / Zero Control Key
Press and release this key to toggle between fast and slow modes. The fast mode
enables anticipation, which shortens the natural response time of the detector.
The slow mode disables anticipation. By default, the 1917-R will always power-
up in fast mode.
