Input Level Settings; Front Panel Leds; Compatible Accessories - Klein + Hummel K8-AI8 Bedienungsanleitung

PIN 1 Phantom Ground
PIN 2 Phantom Power
PIN 3 Data A (+)
PIN 4 Data B (-)
PIN 5 Signal Ground
PIN 6-9 Not Used
The phantom power is used to drive K8 accessories designed to attach to the local control connector, such
as a local volume control wall plate. Phantom power is switched off by default and must be activated
through the control protocol.

Input Level Settings

The AI8 is shipped from the factory to accept a +4 dBu nominal input level with the peaks no greater than
+20 dBu.
For connection of devices with unbalanced RCA connections, such as CD or MP3 players, a rear mounted DIP
switch allows each individual channel to be set to an input level of –10 dBV.
For other input levels less than +20 dBu peak, a recessed screw turn potentiometer can be used to exactly
trim each channel to the desired input level. An overflow LED indicator next to the adjustments shows
when the analogue to digital converter has been saturated.

Front Panel LEDs

Each input channel has 3 front panel LEDs to show channel level. The green LED illuminates at signal
present 32 dB below digital full scale. The yellow LED illuminates at nominal level 12 dB below digital full
scale. The red LED illuminates just before the onset of clipping. Brief illuminations of the red LED are
acceptable in normal operation.
The AI8 input meters show the analogue signal level after it has been adjusted by the DIP switch and
adjustment pot settings, just before it is converted to digital.

Compatible Accessories

K8- - - - 485 K8 485 USB to RS-485 adaptor cable for using a PC to program K8 system devices.
K8 K8 485 485
K8 K8- - - - *** K8 K8 *** *** *** A variety of input and output signal types are available and always growing.
Page 10
DB9 Female Control Connector
K8 Rackmount Family User Manual