User Manual

Copyright 2012 Page 22
on prompt. The lens will then wait for one second to receive an N command from a
controlling channel. If the N command is not received within one second, the baud rate
will drop to 9600 and the lens power-on string will be sent again. The lens will then wait
until an N command is received. The lens must receive an N command as the first
command. Once the lens has received and responded to the N command, all other
commands (valid for that lens type) are available to the controlling channel(s). For
example, the Kbn command can be sent to the lens to revise the baud rate.
Variations are shown in the table below.
4.9.1 Table 4: Controlling Channel and Start-up Baud Rate
Lens Type
Interface with Power
Controlling Channel
Start-up Baud Rate
External
Camera
PanchroI
N/A
Yes
Camera
115k2
RED Zoom
N/A
Yes
Camera
115k2
S4I
YES
YES
External
115k2
S4I
YES
NO
External
115k2
S4I
NO
YES
Camera
115k2
S4I-older version
YES
YES
External
115k2
S4I-older version
YES
NO
External
115k2
S4I-older version
NO
YES
Camera
9600
5I
YES
YES
Both
115k2
5I
YES
NO
External
115k2
5I
NO
YES
Camera
115k2
4.9.2 Bluetooth Operation – S4I Lenses Only
S4I lenses are Bluetooth capable (if the external interface has control), although
this feature has been dropped from the 5I and PanchroI lens’ series and will likely be
retired in future S4I lenses. If an S4I lens is controlled by the external interface, its
start-up baud rate will be 115k2 and the standard power-on prompt, <[l/f][c/r/], is sent
to both channels. The lens will wait for one second to receive an N command from the
external channel. If no response is received within one second, the data rate will drop
to 9600 baud and a modified power-on string is sent: +++<[l/f][c/r/]. This string doubles
as a Bluetooth initialization prompt, “+++” and a standard start-up prompt, “<”. The
lens at this stage will accept either the N command directly through the external
interface or it will enter a series of exchanges to establish a Bluetooth connection. If the
N command is received on the external interface, the lens will skip further Bluetooth
operation and enter normal startup mode.