AEM SM46, Installation And Operation Manual

Page: 54 / 55

N335 Series Audio Controller
SM46 Installation and Operation Manual
May 18, 2012 Rev: 2.00 Page 3-3
ENG-FORM: 806-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRONICS MANUFACTURING CORP.
3.3.3 Transmit Selection
The transmit selection control is an edge lighted plastic rotary control used to select the microphone for
radio transmit, loudspeaker (
LS ) or Intercom ( IC ) operation. The TX
function is ‘shared’ by the two
headsets that can be connected to the N335. For N335-20x TX operations, the unit is configurable to
allow user #1 to have priority over user #2.
N335-001 and -201 N335-002 and -202
For each of the transceivers there is an associated receive volume control knob ( RX SEL , see section
3.2.2), which will effectively turn the receiver off if the fully ccw detent position is selected. However, if the
Transmit Selection control has been used to select a radio for transmission that has been turned off by
the relevant
RX SEL control, an auto-receive feature will ensure a fixed level signal is audible at the
headset.
The green TX LED or deadfront text will illuminate while the unit is in transmit mode.
Selecting LS diverts microphone audio to the loudspeaker system. The loudspeaker sidetone (if
required) is pre-selected at the time of installation.
When IC is selected, the transmit controls are keyed to ICS only.
3.3.4 Emergency Switch
Note : The N335 can be configured at the factory or by a qualified installer to provide automatic
selection of the Emergency mode in the event of power failure to the Normal channel. The
manual selection described above is the default setting for the N335-001 and -002; for the N335-
201 and -202, automatic selection is the default setting.
The emergency switch is a locking, two-position switch, which manually switches the
microphones and earphones over to a second complete system.
N335-201 and -202
When EMER is selected, the deadfront text will illuminate to warn the operator that the
controller is operating in the emergency mode.
N335-001 and -002
When EMER is selected, the green EMERG LED will illuminate to warn the operator
that the controller is operating in the emergency mode.