KLING & FREITAG K&F CD 44 Digital System controller - Manual (Page 31)

User's manual K&F CD 44 Digital System Controller
KLING & FREITAG GMBH © 2014 Version 11.6 Page 31 of 77
The possible settings for the input signals can be set under the menu item ‘In’. Depending
on which routing you have selected, up to 4 inputs are available for settings (Input1 through
Input4):
In Input Patching, you can choose if the CD 44 will be supplied with analogue or digital
signals. Furthermore, there is the possibility here to create a mono sum or to exchange input
channels. See graphic on next page.
1. In » Input Patching:
In Input Patching, you can choose if the CD 44 will be supplied with analogue or digital
signals. Furthermore, there is the possibility here to create a mono sum or to exchange
input channels. See graphic on next page.
2. In » Input Patching » Analog Default
The controller is supplied with analogue input signals.
The nominal input level is +6dBu (1.55Vrms).
The maximum input level is +18dBu, that is, the signal peaks must not exceed +18dBu
(6V).
3. In » Input Patching » Analog Flipped
Corresponds to the setting: In » Input Patching » Analog Default, but INPUT 1 is
exchanged with INPUT 2, and INPUT 3 with INPUT 4.
4. In » Input Patching » Analog 1&2 Mix
With this setting, the mono sum out of INPUT1 and INPUT2 is created immediately behind
the physical inputs. In routings having just one input (i.e. 1 in 4 out), the second input is
activated with this setting to create the mono sum of a two channels.
5. In » Input Patching » Digital Default
The input connectors INPUT 3 and INPUT 4 are not used in this mode!
The input connectors INPUT 3 and INPUT 4 are not used in this mode!
Make the adjustment <In » Input Patching » Digital Default> before connecting the
digital signal!
To avoid unexpectedly high volume levels, reduce the controller’s input gains to a value
of approx. –40 dB before you supply these connectors with a digital signal directly from
an audio source, and then adjust the level to your needs!
Adjust input gain at: <In » Input1> through <Input4 » Gain>
The digital signals which are connected here may have a resolution of 16, 18, 20, or 24
bits and a sampling rate of 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, or 192
kHz.
When using the AES / EBU input, in addition to the system delay of 0.5 ms, a further delay
arises from the sample rate converter: With a sample rate of 44.1 kHz = approx. 2.4 ms.
With a sample rate 48 kHz = approx. 2.2 ms. With a sample rate 88.2 kHz = approx. 1.5
ms. With a sample rate 96 kHz = approx. 1.4 ms. Further instructions in dealing with the
data transmission process AES / EBU can be found in chapter 'Instructions for AES / EBU
Data Transmission' on page 71.
6. In » Input Patching » Digital Flipped
Corresponds to the setting: <In » Input Patching » Digital Default>, but the signals have
a crossover routing. So what was previously the left signal becomes the right, and vice
versa. Exchanging the pins 2 and 3 has no effect.
7. In » Input Patching » Digital 1&2 Mix
With this setting, the mono sum out of AES/EBU INPUT1 left and right is created
immediately behind the physical inputs. In routings having just one input (i.e. 1 in 4 out),
left and right are activated with this setting to create the mono sum of a stereo signal.
8. llustration of the different Input Patchings