Operation Manual

22
ENGLISH
REAR PANEL
+ Hot audio input
– Cold audio input
GND ground
CMD command – priority access when connected to ground
8 2 RJ 45 sockets (channels 2 and 3) to connect an RCF BM 3001 paging microphone per
socket.
Note: when a BM 3001 paging microphone is connected, it is necessary to set the dip-switches
3 and 4 of the relevant channel to the -20 dBu + PHANTOM mode (see 10 below).
9 4 balanced audio inputs (channels 1, 2, 3, 4) with sockets for removable connectors.
0 Each channel has 4 dip-switches:
i
When a BM 3001 paging microphone is used, it is necessary to choose the ‘MIC with PHANTOM’
mode in the relevant channel (dip-switch no.3 set to PHANTOM; dip-switch no.4 set to MIC).
BALANCED CONNECTION
+ hot
– cold
GND ground
UNBALANCED CONNECTION
DIP 3 DIP 4 MODO USE (EXAMPLES)
OFF
0 dBu 0 dBu (CHANNEL 1) CD/MP3 players, tuners, message players, phone systems
PHANTOM
0 dBu
0 dBu + PHANTOM
(CHANNEL 1)
Pre-amplified (0 dBu output) paging microphone that needs
‘phantom’ power supply
OFF
-20 dBu -20 dBu (IN. 2, 3, 4) Audio source having a – 20 dBu output
PHANTOM
-20 dBu
-20 dBu + PHANTOM
(CHANNELS 2, 3, 4)
BM 3001 paging microphone
OFF
MIC MIC Dynamic microphones
PHANTOM
MIC MIC + PHANTOM Electret microphones
1
OFF – CHIME OFF: the chime is disabled.
CHIME: the chime will be played as soon as a
priority command is activated.
2
OFF – HI PASS
OFF: the audio hi-pass filter is not inserted
(flat frequency response).
HI PASS: the audio hi-pass filter is inserted.
3
OFF – PHANTOM
OFF: the PHANTOM power supply is not
available on the relevant audio input.
PHANTOM: the PHANTOM power supply is
available on the relevant audio input.
4
CHANNEL 1
0 dBu – MIC
0 dBu: input level = 0 dBu (775 mV). MIC: microphone audio input.
CHANNELS 2, 3, 4
-20 dBu – MIC
-20 dBu: input level = -20 dBu (78 mV). MIC: microphone audio input.
i
Examples of dip-switches 3 and 4 settings:
i
When a BM 3001 paging microphone is used, it is necessary to choose the ‘-20 dBu +
PHANTOM’ mode in the relevant channel (dip-switch no.3 set to PHANTOM; dip-switch no.4 set
to -20 dBu).
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IN 1
IN 2-3-4