Connecting External Keyboards; Connecting Audio Devices; Recording Audio - Dedicated Micros D4 Anleitung

Relay connections are as follows:
CONNECTION
PIN
1 -2
Relay 1
3 - 4
Relay 2
5 - 6
Relay 3
7 - 8
Relay 4
Important Note: The onboard relays are rated at 24V 500mA, do not attempt
to connect mains power through the relays.
Connecting External Keyboard (KBS3)
The D4 supports an external keyboard to offer variable speed control.
The remote keyboard (DM/KBS3) can be connected to the RS485 Bus of the
D4 unit. This offers extra functionality:
• Remote control from a distance of up to 1500m (4900ft).
• Control of on-board telemetry.
• Jog/shuttle playback using the joystick.
• Panic alarm button (record all cameras at the alarm rate and activate the
alarm relay, R1).
Important Note: Multiple D4 units can not be connected together; the external
keyboard (DM/KBS3) can only be used to control a single D4 unit at any one
time, i.e. one keyboard per D4 unit.
8
ACTION
Close on Alarm
Close on Activity
Close on Camera fail
Undefined

Connecting Audio Devices

D4 can record and playback a single stream of audio linked to Camera 1.
There are two audio input ports: MIC IN and LINE IN, and an audio output:
LINE OUT.
Connecting a Microphone to MIC IN
Connect the microphone into the 3.5mm jack plug labeled MIC IN. It is
important to select the correct type of microphone for connection to the D4. D4
requires an electret microphone with a sensitivity of -50dBV or better.
Connecting a Pre-amplifier to LINE IN
Where additional microphone gain and/or adjustable gain is required, an
external microphone pre-amplifier with adjustable gain is recommended. A
microphone pre-amplifier will provide a line level 1V pk-pk signal that can be
connected to the RCA socket labeled LINE IN on the D4. The line level input
has the following specification:
Line IN 47 KOhm input impedance, 1V pk-pk.
Connecting the LINE OUT to an Amplifier
Connect the RCA socket labeled LINE OUT to an external amplifier or powered
loudspeakers. The line level output has the following specification:
Line OUT 1V pk-pk.

Recording Audio

Once the microphone or pre-amplifier is connected to the D4, the option to
record audio should be enabled in the menu. See page 20 for details of
enabling audio recording. It is advised that you test the quality of audio
playback, it may be necessary to increase the gain of the microphone.
As the audio is linked to Camera 1, it is required that Camera 1 be viewed,
either in a full screen or in a quad view during playback to hear the audio.