CX462 Audio System Controller
Setup And Installation Guide
CLOUD ELECTRONICS LIMITED
6
V3 280904
6.1 Microphone Access Contacts
Access contacts for each individual microphone input are provided on the rear panel. Individual
microphone inputs can be activated by connecting their respective contact to the 0V contact,
leaving the access terminal open circuit will mute the microphone input. This provides the
facility to mute microphones using remote switches. When these access contacts are not
required they can be bypassed via the configuration of the internal jumpers detailed below:
NOTE: We advise that when you remove a jumper you leave it connected to one pin of the
header so it remains with the apparatus for future use.
The default factory configuration of these jumpers is to bypass access terminals, leaving all
microphone inputs active. It is also possible to mute the microphone inputs using the CDI-S100
interface module. In order for the CDI-S100 to effectively mute a microphone channel, the
corresponding jumper must be in place.
When setting the jumper(s) please ensure that you:
w
Remove the mains cable from the rear of the product before removing the top
panel.
w
Only reassemble the unit using screws identical to the original parts.
6.2 Microphone Gain Controls
Pre-set gain controls are provided adjacent to the respective microphone input. The gain can
be adjusted from 0dB to 60dB. Typically, a setting of ~30dB is adequate for dynamic
microphones. A high overload margin is maintained at all gain settings. This should allow a
signal range from 0.775mV (-60dBu) to 775mV (0dBu).
Access bypass jumpers
J1- 4: Microphones 1- 4 respectively
Location of Jumpers J1- 4
