4400 AND 4800 SERIES MIXERS
MAY 1999
SECTION
4
GROUP
20
SUB
B
PAGE
17
INSTALLATION INSTRUCTIONS
MODELS 4400 SERIES AND 4800 SERIES AUTOMATIC MIXERS
Figure 17 - Last Mic On and Onput for gated inputs
Jumper setup
Last Mic On - When the Last Mic On feature
is enabled, the last input which is gated on re-
mains on until another input is gated on in its
place. This feature prevents the system from
sounding ‘dead’ by always keeping one mi-
crophone on. The figure below shows the de-
tails of Last Mic On jumper placement. When
Last Mic On is used with a combined 8 input
mixer, jumpers must be placed on both input
boards in the Last Mic On position.
Onput - When the Onput feature is enabled,
input number 1 is gated on or remains on until
another input is gated on in its place. This fea-
ture prevents the system from sounding
‘dead’ by turning on the number 1 input when
all other inputs are gated off. Shown below are
the details of Onput jumper placement. When
using the Onput feature with a combined 8 in-
put mixer, Onput must be selected on only
one of the two input boards. If selected on the
‘A’ board, input 1 will gate on when all other
inputs gate off. If Onput is selected on board
‘B’ then input 5 will gate on when all other in-
puts gate off.
If neither Last Mic On nor Onput jumpers are
in place as in shown below, gated inputs will
gate off normally. Do not attempt to operate
the system with only one jumper in place or
with other jumper combinations. Erratic op-
eration will result.
As shipped from the factory, neither Last Mic
On nor Onput jumpers are in place (normal
operation).
LAST MIC ON AND ONPUT FOR GATED INPUTS
