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PX Version 5.0 - QX/RX Version 4.51 Installation Manual – Issue F
- 20 -
Diagnostics
Diagnostics
Accuracy
The accuracy of the diagnostic system is typically less than 1%, with a maximum error 2.5%. This
accuracy can only be achieved by programming the correct value of the 5V-reference voltage (option
69 on the main menu).
Diagnostics
Supply Measurements
Parameter Range Resolution
Panel voltage 0-20v 78mV
Panel battery voltage 0-20v 78mV
System current 0-2A 7.8mA
Battery Current 0-1.1A 4.4mA
Battery standby capacity See Note 1 hour
Concentrator current 0-250mA 1mA
Concentrator voltage 0-15V 58mV
Keypad voltage 0-15V 58mV
Circuit resistance (for 8k2 EOL) 0-20K 70R
Note: The displayed standby capacity will depend on the programmed battery size and the actual
system current.
Diagnostics
XiB Comms LED
All XiB peripherals, except the keypad, have a green LED fitted, which is used to indicate the state of
the XiB communications.
State Meaning
OFF No power
ON Communication error
Slow FLASH Operating normally
Quick FLASH Resetting, or frequency of polling in a dialler, serial module or IP module
Diagnostics
Circuit Limits
Option Default RX16i/QX32i/
PX48i/PX80i/
PX250i
Concentrator Keypad Access
Module
Debounce
time
200ms 2.2-500ms
(inputs 1-3)
14-500ms
(inputs 4-8)
2-500ms
(inputs 1-4)
10-500ms
(inputs 5-8)
200ms 200ms
Pulse count 0 (Off) 0-255 0-255 Not Applicable Not
Applicable
Pulse count
period
2 secs 2-255 seconds 2-255 seconds Not Applicable Not
Applicable
Tamper
resistor
8k2 Programmable Programmable Programmable 8k2
Alarm resistor 8k2 Programmable Programmable Programmable 8k2
A
larm/Tamper
threshold
30% 30-100 30-100 20% 20%
All percentages are with reference to the nominal programmed EOL value. The alarm and tamper
EOL resistors are programmable. Refer to system options in the engineer manual for details.
20


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