Specifications

Danish Interpretation Systems Technical Specifications
Printed in Denmark
46
After the ‘CU reset’ message, the CU transmits an ASCII text. This text is not wrapped in <START>
and <STOP> delimiters, so it should simply be dismissed.
Inside the CU, an initialization phase takes place after sending of the ‘CU reset’ message. The external
control unit may respond to immediately to the ‘CU reset’ message by putting the CU in binary
microphone control mode, and by initiating registration in the CU, but the CU is unable to reply to the
registration for approximately 3 seconds after the ‘CU reset’ message.
5.2.2 Power up of the CU before connecting
If the external control unit connects to the CU after power up of the CU, the setup of binary
microphone control mode and registration of external controller may take place immediately.
External
Control Unit
CU
Change binary control Mode
Change binary control ModeChange binary control Mode
Change binary control Mode
<START> 'm' <ID> 'c' 'm' <CRC> <STOP>
Controller Address
Controller AddressController Address
Controller Address
<START> 'c' <ID> <15> <173> <27>
<4> <2> <New Addr MSB> <New Addr LSB>
<Ext. ID> <CRC> <STOP>
The CU is put in microphone control
mode.
Register External controller
Register External controllerRegister External controller
Register External controller
<START> 'j' <ID> <0> <15> <173> <27>
<2> <1> <Ext. ID> <CRC> <STOP>
Registration is initiated by the
external control unit.
The CU confirms the registration by
returning an address to the external
control unit.
The external control unit connects
to the CU after power up of the CU.
The serial connection is already
initialized.
Figure 2 - Connecting to a CU after CU power up.