Media Control Protocol for ew G4 series

TI 1254 v1.0 - ew G4 | 12/37
Technical information
Media control protocol description
The ‚Push‘ command can only be sent with all 3 parameters.
By using all three parameters an immediate update can be executed, if required. This could be used
during initialisation. In order to execute the immediate update timeout value has to be set to ‚0‘. If
cyclic attributes shall be updated the second parameter has to be greater than 0. For the configu-
ration attributes the third parameter has to be set to 1. At least one of the second and third param-
eter has to be unequal to 0. If all three parameters are 0 Sennheiser device stops sending out any
information.
It might happen that cyclic/configuration attributes are sent first to media control before the Push
instruction is sent as acknowledgement. So the order of responses might vary.
Parameters
Name Value Range Get request Set request Relative
change
Timeout 0..300 sec.
Resolution: 1 sec.
- X No
Cyclic attributes 0..60000 msec.
Resolution: 100 msec.
- X No
Settings of config-
uration and cyclic
attributes
See table on page 11: Meaning of
3rd Push parameter only available
for EM
- X No
Examples
Push 0 0 1<CR>
All configuration attributes are sent once immediately. Sennheiser device replies with
Push 0 0 1<CR>.
Push 0 0 2<CR>
All configuration attributes are sent once immediately. Sennheiser device replies with Push
0 0 2<CR>. Whenever the third parameter is greater than 0 all configuration attributes are sent
once immediately.
Push 0 100 0<CR>
All cyclic attributes are sent once immediately. Sennheiser device replies with Push 0 100 0<CR>.
Push 5 400 1<CR>
The timeout value determines how long the settings for cyclic and configuration attributes are valid.
Cyclic attributes are updated every 400 ms for a period of 5 sec.
Configuration attributes are updated on change for a period of 5 sec. If the cyclic and configuration
attributes should be updated permanently the whole instruction has to be sent again and again.
Sennheiser device replies with Push 5 400 1<CR>.
Push 5<CR>
Sennheiser device replies with 1040: Invalid numbers of parameter [ Push 5 ]<CR>.
Push 0<CR>
Sennheiser device replies with 1040: Invalid numbers of parameter [ Push 0 ]<CR>.
Push 0 0 0<CR>
Sennheiser device will stop sending out all attributes and reply with Push 0 0 0<CR>.