i.description of performance
1
the controlling keyboard is a unit used to directly control
terminal receiving devices such as high speed dome cameras,
decoders, etc. the electric port between the controlling keyboard
and the receiving terminal is eia/rs 485, which enables the
keyboard to control as many as 128 speed dome cameras or decoder
terminals devices, within a maximum communication range of 1.5 km.
2、technical data
a. electric data
power supply: dc9v 500ma
power adaptor provided:ac220v±10% 50/60hz switch to dc9v 500ma
communication mode for connection: rs-485 for the connection with
mainframe; rs-485 bus mode for the connection with controlling
devices.
baud rate of communication: 1200/2400/4800/9600/19200 bit/s
distance of communication: 1500m (0.5mm twisted-pair)
b. mechanical data
dimension: 202(l) *168(w) *48(h) mm
c. ambient index
ambient temperature: -10℃~60℃
relative humidity90%rh
ii. description of main functions and features
1. photoelectric insulated rs485 controlling mode is adopted for
the output of the keyboard, which provides strong anti-jamming and
long-distance transmission.
2. the keyboard can control up to 128 speed domes or decoders etc
terminal devices. the address of the speed domes or decoders can be
set within the range of: 1~255.
3. variable-speed operation can be applied to the built-in pan/tilt
of the speed dome through the keyboard.
4. lens zooming, focus and iris can be manually controlled through
the keyboard.
5. manually or automatically control can be applied to speed dome
through the keyboard.
6. joint-control can be realized by using the controlling keyboard
together with one dvr mainframe or embedded dvr
7. preset positions can be set up and previewed in speed dome
through the keyboard.
8. tour groups can be set up and run through the keyboard.
9. left and right limiting positions can be set up and
right-and-left scan can be run through the keyboard.
10. home position can be set up, activated and closed through the
keyboard.
brief introduction
