Philips Hi-Q Digital Video Recorders - Manual (Page 12)

4 TYPICAL SYSTEM CONFIGURATION
A typical system could contain the following components:
Figure 4.1 Typical Configuration
4.1 Hi-Q Audio Connection
The Hi-Q accepts both balanced and unbalanced audio inputs and outputs.
Examples for possible Audio Output connections:
12
Monitor B
PHILIPS PHILIPS
Monitor A
PHILIPS
PHILIPS
PHILIPS
PHILIPS
Archive Device (optional)
Cameras
CAMERA
1
MONITOR
LOOP KEYBD
B 2
3
4
AUDIO
IN
AUDIO
OUT
ALARM
IN
RELAY
SDA
CONSOLE
RX
TX
COL
100
ETHERNET
SCSI
+ S –
+ S –
1 S 2 S 3 S 4 0
1 2 3 4
+ S – + S – + S – + S –
A
2-conductor Shielded Cable
S
+
– +
– S
To Balanced
Audio Device +
S
– –
+
Audio In
Audio Out
NOTE: Balanced connections are more immune
to noise (used for longer distances).
S
+
– –
+
1-conductor Shielded Cable
To Unbalanced
Audio Device
Audio In
Audio Out
S
+
– +
– S
NOTE: Unbalanced connections are used to connect
audio to monitors using standard RCA-type connectors
(typically used for short distances).
Figure 4.2 Balanced Audio Figure 4.3 Unbalanced Audio