Grundig GRT-K1104A, Руководство пользователя

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To connect the PTZ to the model GRY-K4416A:
1. Disconnect the pluggable block from the RS-485 terminal block.
2. Press and hold the orange part of the pluggable block. Insert the signal cables into the slots and release the
orange part. Ensure the signal cables are in tight.
3. Connect R+ on the PTZ to T+ on the terminal block and R- on controller to T- on the terminal block. Fasten the
stop screws.
4. Connect the pluggable block back into the terminal block.
To connect a controller to the DVR:
1. Disconnect the pluggable block from the KB terminal block.
2. Press and hold the orange part of the pluggable block. Insert the signal cables into the slots and release the
orange part. Ensure the signal cables are in tight.
3. Connect T+ on the controller to D+ on the terminal block and T- on the controller to D- on the terminal block.
Fasten the stop screws.
4. Connect the pluggable block back into the terminal block.
Make sure both the controller and the DVR are grounded.
Termination Switch Operation:
The termination switch is placed on the mainboard instead of the rear panel. Open the upper cover and turn
on/off the SW switch if needed.
The termination switch is to connect the DVR with several speed domes, the bus topology can be adopted, which
means the speed domes are connected with each other via the R+ and R- of RS-485 serial interface. But due to
the impedance of 485 wire, the longer the wire is, the greater the impedance gets.
To avoid the signal reduction caused by the great impedance of long distance transmission, please connect two
120
Ω resistors in the circuit: one resistor between the DVR and the nearest speed dome, and the other one after
the furthest speed dome.
Steps:
1. Turn on the SW switches on the DVR and the furthest speed dome.
2. Keep the other SW switches off.
The connection diagram and status of each SW switch are shown in the following figure.
17 English