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Engineering
9
Detector line
Figure / calculation
variable
I
quiet
R
Line+
R
Line-
∆R
max
U
Device
Entry in the calibration
report
1. Calibration status
2. Time since last
calibration
102 | 151
1. Press
on the keypad.
The 'Main menu' window is open.
2. Select 'Engineering' and press
The 'Engineering' window is open.
3. Select 'Detector line' and press
The 'Detector line' window is open.
4. Select 'Calibration' and press
The 'Calibration' window is open.
5. Select 'Calibration report' and press
The display shows the calibration report.
6. Use the navigation keys to navigate through the entries in the calibration report.
You will find more information about the individual entries in the section
'Calibration report' below.
Figures and calculation variables
In the following section, you will find the main figures and calculation variables
needed to understand and interpret the calibration report.
Line calibration for lines with a stub topology has a reduced functional scope as
certain calculation variables cannot be measured.
Description
The measured power consumption of a line in a quiescent condition.
The measured line resistance on the plus wire of the line.
The measured line resistance on the minus wire of the line.
The calculated tolerance of the line when faced with a gradual cable break and
thermal drift.
The value reveals how much additional line resistance the line can still withstand
without the individual line devices falling below their required supply voltage in an
alarm scenario and in the worst assumed underlying conditions*.
The following applies for a permitted line: ∆R
The measured voltage on a 'Voice alarm sounder beacon/Voice al. sound.
beacon base' line device in the worst assumed underlying conditions*.
* The worst possible underlying conditions include a gradual cable break directly
on one of the line's connection terminals and a maximum assumed thermal drift of
∆T = 10 °C.
Entries in the calibration report
Possible content*
Loop 1 state true
Loop 1 state false
Date: Mon Jul 13 11:12:13 2020
.
.
.
.
>0 Ω
max
Description
●
Calibrated: There is data on a
previously completed calibration
process for lines in the system. The
entry also shows whether the
calibration was successful.
The entry shows the last time the lines
were calibrated.
A6V10421795_en--_k
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