INSTALLATION INSTRUCTION FOR PIR-75
Page
10
2824-00001
Annex 3:
Installation Tester IT 44 and PIRScope
Introduction
The universal Installation Tester IT 44 is available as accessory for alignment, setting up and fault finding and
can be used with all analog or digital detectors. It is recommended for verification of all installations in order
to optimise the performance of the detectors.
The following describes the features of the IT 44 and the software program for signal display.
It is strongly recommended that the detection performance of the detector is verified by using the IT 44
Installation Tester. The IT 44 is connected to the detector's test connector from which it receives power and
data without interfering with the detector's operation.
The IT 44 displays all relevant detector data on a 4 - line liquid crystal display (LCD) including signal
amplitudes with peak-hold and the alarm threshold level. This level is dependent on the amount of
disturbance signals including walk tests.
Connection / Reset
The IT 44 is supplied with a cable of app. 3 m length terminated with a 7 pole circular connector. An
adapter cable for connection to the detector's in-line connector is supplied with the IT 44.
When connected to the detector the IT 44 will be powered, start operation and display the identification of
the Installation Tester „
IT 44
“ including its version (e. g. „V 0.2“) on line 1 as well as „
Analog Mode
“ on
line 3 for a short period of time. The same display will appear every time RESET is pressed.
Liquid Crystal Display
The display is divided into 4 lines providing the following information:
Line 1:
Signal and Peak Hold
Quasi-logarithmic bar display in 60 steps shows the signal strength. The peak amplitude of each signal
exceeding the internal noise amplitude by a certain value is maintained for app. 6 s.
Line 2:
Alarm Threshold Level
Displays the instantaneous alarm threshold level in the same scale as in line 1. If the ATD of the detector is
enabled the alarm threshold level will be increased by signals caused by turbulences and walk tests.
Line 3:
Alarm Indicator and Counter
Displays „
Alarm ON
“ or „
Alarm OFF
“ and the number of counts since last reset (display of „
Count
:“ and
„
0
“ to „
99
“ or „
–
“ if 99 counts have been exceeded).
Line 4:
Alarm Time
Displays the alarm time for each event with „
Time
“ and e.g. „
3.8 s
“. The alarm time depends on the actual
alarm duration.
Audible Alarm
The Installation Tester has a high efficiency sounder which allows checking of the installation by a single
person. This is engaged by operating the toggle switch on the side of the IT 44.
Digital Output
The digitised detector information is available on a RS 232 interface on a test connector at the side of the IT
44 for display on a PC screen with the
PIRScope
software.
No attempt should be made to make other use of this connector without instructions.
