Comrex Corporation
12
s
eCtion
3
s
etup
anD
o
peration
As soon as you connect power and the DH30 completes its initialization
cycle (about two seconds), it is functional. The factory default settings that
are active upon power-up can accommodate basic operation. You can im-
mediately use the hybrid to connect, disconnect and record calls.
Before initial use, it is recommended that the DH30 be calibrated to your
telephone system and audio controls. Depending on your site’s unique
needs, some settings may require modification.
F
ront
P
anel
c
ontrolS
On and Off —
When the DH30 is plugged in, it defaults with the hybrid
off, indicated by the red
O
ff
LED.
The
O
n
button connects the DH30 to the telephone line and causes the
hybrid to adapt to the line. Pressing the
O
n
button while the DH30 is con-
nected to a telephone line readapts the hybrid. A steady green LED indi-
cates that the DH30 is on. A flashing green LED indicates an incoming call.
When the
O
ff
button is pressed, the DH30 disconnects from the telephone
line and mutes caller audio. The red
O
ff
LED illuminates.
Record —
The
r
EC
button controls the start or stop of an external record-
ing device connected to the DH30 through the
r
ECOrd
C
OntrOl
output on
the rear panel.
The
r
ECOrd
LED flashes red when recording, appears solid red in record-
ready (standby) mode and is not lit when record mode is off.
Cue —
The
C
UE
button enables the talent to speak to a caller off the air.
When you press the
C
UE
button, the
C
UE
LED illuminates and audio from
the cue input is routed to the caller. When the
C
UE
button is off, the
C
UE
LED turns off and audio from the send input is routed to the caller.
Neither auto mix-minus nor acoustic echo cancellation is performed on the
cue input. Therefore, a mix-minus audio source must be provided to the
cue input.
On
Of
f
Re
c
Cu
e
Esc
On
Of
f
Cu
e
Re
c
-36 -24 -12 -3 -4 0 +4 +8
-36 -24 -12 -3 -4 0 +4 +8
Volume
Send
Caller
Enter
DH30
