Videotec DCJ, Руководство по эксплуатации

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Page 10
MNVADCJ01_1729
_EN
2.4 Second function keys
Some keys (

,

,

) can be used to activate second functions if pressed simultaneously with other
keys.
For example,

means: press the

key followed by the

key, keeping

pressed down.
The keys can be released in any order.
2.5 Dip switch
The back of the keyboard has a set of dip-switches that are used to insert/remove the load of the RS485 lines
and block keyboard programming from the PC. Refer to
§ 3.1 - Video and telemetry lines, page 11
, for further
information about inserting the line loads.
DIP4: load on Video line ON: load inserted
OFF: load removed
DIP3: load on Telemetry B line ON: load inserted
OFF: load removed
DIP2: load on Telemetry A line ON: load inserted
OFF: load removed
DIP1: internal firmware update ON: update is possible
OFF: update is not possible