Product Features3• OK : On menu status, this key is being used to confirm and execute the selected function and on PTZcontrolling mode, it's being used to switch Pan/Tilt mode and Zoom/Focus mode.6. Button for Recording Playback• RECORD : This key button initiates the forced recording except the continuous recording mode. Pressing thiskey button makes all live video channels start recording and pressing it one more time stops the recording.• R.PLAY (Reversed Play) : This is to initiate the reversed playback during forward playback. On PTZ controlmode, this key button is to be used to lower the controlling speed.• STOP : This key button allows you to stop the playback.• PLAY : This is a playback start button and it initiates the playback of pre-selected channel, starting file, and/or audio when it's pressed during live mode. On live mode PAUSE status, this button resumes the playback.In case of PTZ controlling mode, it can be used to increase the controlling speed. On still image viewingmenu, it is also being used for image back up.• PAUSE : This key button freezes the playback mode until it's pressed again.7. Jog/Shuttle• Jog : This is for probe search to check the saved images frame by frame at forward or reverse direction.• Shuttle : On playback, this enables you to run fast times of playback at forward or reverse direction. Onnetwork menu, this enables you to make fast changes of IP and Port numbers.8. IR Reception : This is to accept the IR data from the remote controller.1.2. Rear Panel Fucntions1. VIDEO IN• IN : Camera Input port. This is for CVBS signal input.• OUT : Loop out port of incoming video signal. The user can use it for the input of other DVR or otherchannels.2. VIDEO OUT• VIDEO : VIDEO OUT PORT. CVBS signal is coming out.• SPOT : SPOT video output port. CVBS signal is coming out.3. USB• USB input port to back up video data from HDD.• By connecting USB mouse, you can control DVR with ease.4. ETHERNET• 10/100 Base-T network connection port (RJ-45).5. AUX/ALARM/SENSOR• RS-485 port to connect AUX out control, Alarm control, Sensor connection, RS-232 (TTL Level), PTZconnection. (DSUB-25 male connector)6. RS-485• RS-485 port : RS-485 port to connect PTZ devices. 1~2 EA port(s) are available.