LT Security LTD6299 - Manual (Page 11)

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2.2 Back Panel
1. Video Input Connectors (1-16/1-9)
Connect system cameras to these BNC connectors. The corresponding 75Ω termination
（see # 5） must be made unless the video output terminal is connected.
2. Video Output Connectors (1-16/1-9)
Connect these BNC connectors for looping the corresponding camera video inputs.
3. Stereo Audio Input Connectors (AUDIO IN 1-4)
These RCA connectors accept 2 stereo line-in audio signals supplied from external
devices such as microphone amplifiers.
4. Audio Output Connectors (AUDIO OUT 1-2)
These connectors supply 2 line-out audio signals to external devices such as speakers.
Recorded audio will be supplied from AUDIO OUT during playback.
5. 75Ω termination
Set each of the DIP switches to ON unless the corresponding video output terminal is
connected.
6. Mouse plug port
For mouse connection.
7. MAIN-AUX Connectors (MAIN-AUX IN/OUT)
Used to daisy-chain to TV monitor. MAIN-AUX OUT has the same output as MAIN
OUT, but can be switched off through RS-485 keyboard control.
8. Call Monitor Output Connector (CALL OUT)
Connect TV monitor to this BNC connector for call monitor display.
9. CALL-AUX Connectors (CALL-AUX IN/OUT)
Used to daisy-chain to TV monitor. CALL-AUX OUT has the same output as CALL
OUT, but can be switched off through RS-485 keyboard control.
10. RS-232 Connector
Connect this connector to PTZ camera(s).