User manual

53
LEDs
The 7700 Series unit is equipped with several LEDs that indicate its operating status:
Operating status LED
Not lit: Device is switched off.
Lit yellow: Device is switched on.
Lit red (briefly): Device is starting up.
Lit red (continuously): Device is out of order.
Flashing yellow/red: Upload failed.
Network connection LED
Lit green: Connected to the network.
Not lit: Not connected to the network.
Data transfer LED
Flashing orange: Data transfer via the network.
Not lit: No data transfer.
RS232/485 interface
The serial interface can be used for controlling external connected devices and configuring the unit with a
terminal program. Depending on the setting, the interface works with the RS232 or RS422/485 protocol (see
page 17). The serial interface uses a 5-block terminal connector.
To connect a 7700 Series unit to an external device (e.g. computer, PTZ camera) ending in a DB9 connector,
you will need to connect the wires on the cable’s other end to the 5-block terminal connector as indicated in
the table and DB9 male socket pinout diagram below.
Control of cameras or other
devices does nor work.
The cable connection between the
serial interface and the connected
device is incorrect.
Check all cable connections.
The interface parameters conflict with
those of the other device connected.
Make sure the settings of all devices involved are
compatible.
The unit stops working after a
firmware upload.
Power failure during the firmware
upgrade.
Replace the unit and have it checked by DVTel.
DB9 Pin 5-block Pin
1–
2Rx+
3Tx+
4–
5GND
6–
7Tx+
8Rx-
9–
Problem Possible Causes Solution