16 GR2 User Guide
WARNING
THIS APPARATUS MUST BE EARTHED.
GR2
ZONE OUT
AUX
Z1Z2
OUT
L
R
MUSIC IN
1
23
L
R
L
R
L
R
-G+
Z1L
MIC 1
G-+
Z1R
-G+
Z2
G-+
AUX
-G+
MIC 3
G-+
MIC 4
-G+
MIC 1
G-+
MIC 2
-G+
MIC 5
G-+
MIC 6
-G+
PAGE
G-+
MIC MIX
ZONE REMOTEUTILITY REMOTE
EXPAND IN
( R - MUSIC 4 - L )
MADE IN THE UK BY ALLEN & HEATH LIMITED
ATTENTION: REMPLACER PAR UN FUSIBLE STRICTEMENT IDENTIQUE EN VALEURS.
FOR CONTINUED PROTECTION AGAINST RISK OF FIRE
CAUTION: RISK OF ELECTRIC SHOCK. DO NOT OPEN. AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR.
REP LACE FUSE WITH SAME TY PE AND RATING.
ALLEN&HEATH
WARNING
THIS APPARATUS MUST BE EARTHED.
GR2
ZONE OUT
AUX
Z1Z2
OUT
L
R
MUSIC IN
1
23
L
R
L
R
L
R
-G+
Z1L
MIC 1
G-+
Z1R
-G+
Z2
G-+
AUX
-G+
MIC 3
G-+
MIC 4
-G+
MIC 1
G-+
MIC 2
-G+
MIC 5
G-+
MIC 6
-G+
PAGE
G-+
MIC MIXEXPAND IN
( R - MUSIC 4 - L )
MADE IN THE UK BY ALLEN & HEATH LIMITED
ATTENTION: REMPLACER PAR UN FUSIBLE STRICTEMENT IDENTIQUE EN VALEURS.
FOR CONTINUED PROTECTION AGAINST RISK OF FIRE
CAUTION: RISK OF ELECTRIC SHOCK. DO NOT OPEN. AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR.
REP LACE FUSE WITH SAME TY PE AND RATING.
ALLEN&HEATH
1 PAGE Z1
2 PAGE Z2
3 MIC MUTE
4 0V
5 MIC PRIORITY
6 0V
7 ALARM
8 +10V
21 345678
TIA/EIA 568A
WH/GN
GN
WH/OR
BL
WH/BL
OR
WH/BN
BN
21 345678
TIA/EIA 568B
WH/OR
OR
WH/GN
BL
WH/BL
GN
WH/BN
BN
Page enable zone 1
Page enable zone 2
Mic mute
Mic priority
Alarm (zone mute)
FUSE: T1AL
100 - 240V~
47-63Hz ~ 25W MAX
Remote Control – Utility
The UTILITY REMOTE port provides switch inputs for remote control
of several functions including zone 1 and 2 page enable, mic mute
and priority, and alarm control input.
Switch control
The contact is held high through a steering diode
and 10k ohm series resistor to the internal +5V DC supply. The
function is switched by connecting the contact to 0V (ground).
OFF = Contact open (held at +5V)
ON = Contact switched to 0V
Configure remote control Set the front panel DIP switch H to
enable the mic priority function. The other utility functions are
always available.
CAT5 wiring These functions are available from the utility remote
RJ45 socket, convenient for wiring using standard CAT5 UTP or STP
cable. Wire the circuit according to the RJ45 pin numbers shown
here. If you are using pre-installed cables, note that there are two
CAT5 connection standards, 568A and 568B. The cable colour code
differences are shown in the diagram. Check the pinout first.
Page enable These two contacts may be wired to press-to-make
or latching switches at a paging station so that either or both zones
may be paged. This routes the page mix signal to the zone output
and ducks the zone VCA when page signal is detected.
Mic mute Wire to a switch to silently mute the mic mix. This may
be used to mute conference or live performance mics at a wall plate
near their source.
Mic priority Wire to a switch to duplicate the front panel mic
priority function. Both are active when DIP switch H has been set.
Selecting either switch actions the priority function.
Alarm Wire to a switch to mute both zone VCAs when the contact
is grounded. Note that the page mix continues to be routed to the
outputs. A common application is to connect a fire alarm DC trigger
to silence the music source in the event of an emergency. The
external paging input may be used to feed an evacuation message
to the outputs.
Interfacing to external equipment There are many ways to
interface the utility remote inputs to external equipment. A
competent electronics engineer should be consulted if custom
circuits are to be used. The simplest arrangement is to use a contact
closure such as a switch or relay. The second pole of a switch may
be used to connect an LED or lamp indicator if required.
Check the wiring before connecting power Ensure
the CAT5 cable is correctly wired. Check the continuity of all wiring.
Ensure there are no shorts or exposed wire ends.
10V power If you are powering external interface circuits
from the socket, do not draw more than 100mA from the +10V pin.
The internal 10V supply is protected against a short circuit using a
resettable fuse. If it trips, turn off the GR2, wait a few seconds and
turn it back on again.
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