LINK
COBRANET
ACT FAULT POWER
C 8L
Line In Module
1
-36
-12
02
-36
-12
03
-36
-12
04
-36
-12
05
-36
-12
06
-36
-12
07
-36
-12
08
-36
-12
0
100-250 VAC 50/60 HZ 25 WATTS MAX
1
2345678
ANALOG INPUTS MODEL: CI8L
AUDIO
SHIELD
TO
EARTH
LIFT
COBRANET BUNDLE SELECT
MADE IN USA BY WHIRLWIND
www.whirlwindusa.com
1 20:5.33
2 20:2.66
3 20:1.33
4 24:5.33
5 24:2.66
6 24:1.33
Bitwidth:Latency
®
Three position LED meters monitor the analog signal at the inputs of the analog to digital converters after the input level
controls. The green LED illuminates at -36 dBfs, the yellow at -12 dBfs and the red at the clipping point of the analog to
digital converter.
Input Controls adjust the level of the analog input signal being applied to the analog to digital converters. 35 dB of gain or 43
dB of attenuation allows optimization of the analog signal to minimize noise at the converters. Adjust the signal so that
peaks do not light the red 0 dBfs LED.
CobraNet LINK, ACT, and FAULT LEDs indicate the status of the CobraNet network connection;
LINK LED illuminates only when the Ethernet cable is connected to a network with other CobraNet devices.
ACT (activity) LED is on only when there is a match between the bitwidth:latency and bundle settings of the CI8L and those
of the receiving device.
FAULT LED is used to blink a numeric code to the user with a series of blinks followed by a pause. The number of blinks
indicate the following:
1. Mismatched format or bundle settings
2. Not used on CI8L
3. Invalid bundle number selected (greater than bundle # 65279) or multicast/unicast boundary straddled (bundles
255/256)
4. Ethernet cable disconnected or no other CobraNet devices on network.
5. CobraNet can not communicate with DSP in the CI8L.
6. This code blinks once on power up and whenever an encoder setting change is detected, to warn the user that
persistence is enabled through CobraNet Discovery v3.4.4 and that changing the encoders from 00000 will defeat Disco
control at the next power cycle. Persistence enabled means that the unit will remember its last settings through power
cycling.
Power LED illuminates when AC power is applied to the unit and the unit is operating.
Fan provides cooling to the internal components of the CI8L. There is a foam filter on the front, which should be cleaned
periodically to maintain good airflow. The front plastic fan guard snaps out to expose the filter.
XLR Inputs 1 through 8 accept balanced or unbalanced analog audio at line levels. For unbalanced inputs, connect pin 3 to
pin 1 in the inline XLR connector.
AUDIO SHIELD TO EARTH switch breaks the connection fromAC Earth to the audio common to reduce hum when
necessary.
1.
2.
3.
4.
5.
6.
7.
CobraNet Bundle Select switches are used to select the bundle number to be transmitted by the CI8L. All 65,279 CobraNet
bundles are directly accessible from the encoders. Bundles 1-255 are Multicast bundles and 256-65,279 are Unicast. The
leftmost encoder also has 3 special functions. With the encoder in the 7xxxx position, the front three status LEDs (LINK,
ACT, FAULT) will flash a code for the software version in the CI8L. The LEDs will blink the number of the software version
with a long pause between the series of blinks; e.g., four flashes followed by a long pause equals version four. Should the
CI8L ever need to be rebooted, the 8xxxx position of the encoder will cycle a reset of the unit every two seconds.
Unplugging and reconnecting the power cord will also reset the CI8L. The 9xxxx position of the encoder is a self test for all
the LEDs except the power LED. Setting all switches to 0 allows remote setting of bundle parameters through the network
with CobraNet Discovery software v3.4.4.
Bitwidth:Latency Selector matches the audio bitwidth and latency transmitted by the CI8L to that of the receiving CobraNet
device. Individual CobraNet devices must have the same bitwidth and latency to communicate with each other properly. The
transmit setting must be acceptable to the device set to receive that bundle. Many receive devices have an autodetect
feature that will match the bitwidth and latency to that of the transmitter.The CI8L uses an 8 position selector for choosing
20 or 24 bit word length and 5.33 ms, 2.66 ms or 1.33 ms latencies.
In 24 bit word length and 5.33 ms latency, a special case exists; there are a maximum of 7 audio channels that can
be packaged into a single bundle at this setting. Whirlwind uses pairs of bundles where seven audio channels are
contained in one bundle and one audio channel in the next higher bundle. Channel 8 is automatically pushed up
into the channel 1 slot of the next higher bundle number.
CobraNet jack connects the CI8L to the Ethernet switch carrying the CobraNet network.A green LED indicates network link
and a yellow LED indicates data activity. These are duplicated by two green LEDs on the front panel along with a red FAULT
LED indicator.
Power inlet is a standard IEC connection. The power supply is internationally universal with a voltage range of 100 to 250
VAC at 50 or 60 Hz.
CobraNet Parameter Control through Discovery v3.4.4.
Setting all the Bundle Select Switches to 00000 allows remote setting of CobraNet parameters through the network with CobraNet
Discovery software, v3.4.4 available at www.cirrus.com/cobranetsoftware. Some of the parameters that can be controlled on the CI8L
include bundle numbers, number of channels in the bundles, digital word length, latency and persistence.
These parameters are unlike the selections made with the encoders. Bundle numbers and bitwidth:latency selections made with the
switches are hard coded and remembered when the power to the CI8L is cycled. Settings made through Disco are volatile and forgotten on
a power cycle, unless persistence is turned on and Bundle Select Switches are set to 0. There are also four transmitters available through
Disco instead of just the one through the encoders.
Disco will temporarily override encoder settings other than 00000 on a CI8L. These settings will not be remembered on power cycling
regardless of the persistence setting in Disco.
9.
10.
11.
8.
1
12
234
45
Controls and Connections
6
7
8
1
2
3
4
5
6
7
0
9
10
11
