Cloud Electronics CX263 - Manual (Page 12)

When setting the jumper(s) please ensure that you:
• Remove the mains cable from the rear of the product before removing the top
panel.
• Only reassemble the unit using screws identical to the original parts.
NOTE: The CX263 does not provide a power supply pin on these access contacts, so any
paging microphone used with the CX263 will need to use its own external supply.
NOTE: For the CDI-S200 serial interface card to have control over Mic 1 access, the access
contacts on the rear panel need to be enabled.
6.2 Microphone Gain Controls
A pre-set gain control is provided adjacent to each microphone input. The gain can be adjusted
from 10dB to 50dB. A high overload margin is maintained at all gain settings.
6.3 Microphone Level Controls
Front panel microphone level controls are provided for each stereo zone. Rotating any
microphone level control fully anti-clockwise effectively turns the microphone off. In addition,
microphone 1 can be muted on a zone-by-zone basis using the access contacts on the rear
panel or the CDI-S200 if installed.
6.4 Microphone Equalisation
Two-band equalisation is provided for each microphone input. The pre-set controls to adjust the
equalisation are located at the lower right hand side of the front panel. The characteristics of
the equalisation are optimised for the tonal correction of speech signals. The HF control
provides ±10dB at 5kHz whilst the LF control provides ±10dB at 100Hz. These controls will be
concealed once the tamperproof facia is attached.
To effectively bypass the microphone equalisation section, both pre-set controls for that input
should be set to 0dBu (mid-position/vertical).
6.5 High Pass Filter
Both microphone signals pass through a 100Hz high pass filter. This is to reduce breath blasts
and handling noise on the microphone audio.
CX263 Zone Mixer Installation and Setup Guide
CLOUD ELECTRONICS LIMITED
6 V2 100904
Paging Access Contacts continued