Dolby Laboratories IMS2000 - Dolby Atmos Channel Dropout

Dolby
®
IMS2000 Installation and User’s Manual
IMS.OM.004730.DRM Issue 3 291
19.5.4 Dolby Atmos Channel Dropout
If the system experiences Dolby Atmos dropout when outputting only the base bed
audio channels (that is, the first ten physical channels, for example, 5.1 or 7.1), this might
be caused by network dropout or a network that is not running at an optimum speed.
1. Check the Ethernet port to which your CP850 is connected (for example, 10.203.50.10).
In
drmreport.txt, search for IP Interfaces.
Example 1: Dropped Packet
eth0 Link encap:Ethernet HWaddr 00:25:90:74:08:F8
inet addr:10.203.50.204 Bcast:10.203.50.255 Mask:255.255.255.0
inet6 addr: fe80::225:90ff:fe74:8f8/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:103696968 errors:0 dropped:12866overruns:0 frame:0
TX packets:34997690 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1007555312 (960.8 MiB) TX bytes:3127287593(2.9 GiB)
Base address:0x2000 Memory:d0300000-d0320000
Example 2: Network run is only at 100 base T (max 100mbps, and should be 1000
(gigabit) as Atmos needs 150 mbps
eth0 Link encap:Ethernet HWaddr 00:25:90:74:08:F8
inet addr:10.203.50.204 Bcast:10.203.50.255 Mask:255.255.255.0
inet6 addr: fe80::225:90ff:fe74:8f8/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:103696968 errors:0 dropped:0 overruns:0 frame:0
TX packets:34997690 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:1007555312 (960.8 MiB) TX bytes:3127287593(2.9 GiB)
Base address:0x2000 Memory:d0300000-d0320000
2. Verify that you are using a gigabit network switch.