Specifications

PICED FAQ

Page 14

Cause

If you have C-Bus Firmware version 4.0 (see the C-Touch start-up screen), it may be that you have

more than one burden enabled on the network. With version 4.0 of the PC Interface chip (inside

C-Touch) it is possible to have burdens enabled with any unit address. Prior to version 4.0, the

burden was only enabled for unit address 1.

Solution

Ensure that there is no more than one burden set on the network.

1.3.1.4 C-Touch Version Information

Problem

How do you find out the version of C-Touch ?

Solution

When you first apply power, a screen shows several pieces of version data :

Hardware Version

– this is the version of the hardware. If the version is 1.0 or later, it has the

new (LED) backlight.

Monitor Version

– this is the version of the monitor. This can only be updated in the factory.

This does not apply to C-Touch Mark 2.

C-Touch Firmware Version

– this is the version of the firmware. This can be upgraded.

C-Bus Firmware Version

– this is the version of the C-Bus Interface chip.

1.3.1.5 Dim Backlight

Problem

C-Touch backlight is not very bright.

Solution

If you have a C-Touch with hardware version less than 1.0, then you have an Electro-Luminescent

(EL) backlight, which is not very bright by its nature.

If you have a C-Touch with hardware version 1.0 or later, then you have a Light Emitting Diode

(LED) backlight. This is much brighter than the EL backlight, as long as you have sufficient C-Bus

Voltage. If you go to the backlight control page on C-Touch, you will be able to see the backlight

current. If the C-Bus voltage is greater than around 25V, you should get the full backlight current

(60mA). If the current is less than this, it is due to the C-Bus voltage being low. The C-Bus voltage

can be increased by adding additional power supplies, preferably close to C-Touch to minimise

voltage drops across long wiring runs.

1.3.1.6 Current Consumption

Problem

What is the current consumption of C-Touch ?

Solution

C-Touch (Mark 1) draws 40mA and C-Touch Mark 2 draws 65mA from C-Bus regardless of the

backlight state (on or off).