120Ohm Termination Resistance; Audible Alarm Switch; Configuration Settings; Settings Options Explained - CGS Merlin GDP2X Manuel D'installation Et D'utilisation

Installation & Operation Manual

120ohm Termination Resistance

Signal communication issues may occur where the bus length is too long, high baud rates are
used or signal reflections are occurring. To avoid this, terminating at each end of a chain
may help the quality of the data signal by turning on the 120-ohm terminal resistor switch.
If a split chain is used, terminate the last detector in each chain.
If a single chain is used, terminate the first device (Panel) and last device (Detector).
Split chain

Audible Alarm Switch

There is a switch on the detector board identified as [Buzzer On/Off].
The detector can be configured to have an audible alarm or not when gas levels reach the alarm
set points. The alarm will continuously sound – there are no provisions to silence the alarm, gas
levels must drop to a safe value for the alarm to stop.

Configuration Settings

On the circuit board you will find a [SETTINGS] dipswitch, when switched to on the screen will display the settings
menu – you can now configure your detection system.
Adjust Screen Brightness.
Press or slide the cursor up and down.
When the system is configured – turn the SETTINGS switch off and the system will restart.
To view, change and save settings, you must provide mains power!
Access to the interior of the detector, when carrying out any work, must be conducted by a competent person!
Before carrying out any work ensure local regulations and site procedures are followed!

Settings Options Explained

FUNCTION
BMS relay ON/OFF for-
Auto Start-
FAB Auto Reset
IOM Iss: 2 03-22
OPTION Explanation
- Gas -Gas changes relay state with gas valve status only.
- Error -Error changes relay state upon all alarm messages.
- ON
In the event of a power loss, the system will restart automatically when restored.
- OFF
- ON ON: System resets with the fire panel automatically following fire panel alarm.
- OFF OFF: Manually reset system following fire panel alarm.
Single chain
Change/Select Option
Press the blue option box or press and hold.
Merlin GDP2X
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