Collcomm NCS-C003 User manual

collcomm inc
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NC CS S- -C C0 00 03 3 H He ea ad ds se et t I In nt te er rf fa ac ce e B Bo ox x
1.0 Description
The NCS-C003 Headset Interface Box provides a convenient method of connecting a headset,
PTT switch, and speakers to the NCS-C250 Mobile Multi-Switcher. A headset adaptor cable,
designed to interface the headset in use to the NCS-C003, is required. An NCS-250-HIB1-XX
cable to connect between the NCS-C003 and the NCS-C250 is supplied with the unit. The length
of this cable is normally 6 feet.
Figure 1 –NCS-C003 Headset Interface Box
2.0 Front and Rear Panel Connector Identification
Item
Description
1
Headset Connector, 12 Pin Female, Push-Push
2
PTT Switch Input Jack, ¼ inch Mono Phone Jack
3
Audio and Control Signal Connector, 8 Pin Male Foster Connector
4
Unselected Audio Speaker Jack, 3.5 mm Mono Phone Jack
5
Selected Audio Speaker Jack, 3.5 mm Mono Phone Jack
Figure 2 –Connector Identification
PTT HEADSET
To SPEAKERS
SEL UNSEL To NCS-C250A
5 4 3 2 1
Rear Panel Front Panel

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3.0 Headset, Speaker and PTT Switch Requirements
3.1 Headset
Most any headset can be accommodated by the NCS-C003. A Headset Adaptor Cable is
required to interface the desired headset to the NCS-C003. Headsets with one or two
earpieces can be used.
3.1.1 Dual Earpiece Headset
When a dual earpiece headset is used and is connected to the NCS-C003 using the
required adaptor cable, both the Selected and Unselected speakers will be muted. The
Selected and Unselected receive audio will be routed to the headset.
3.1.2 Single Earpiece Headset
When a single earpiece headset is used and is connected to the NCS-C003 using the
required adaptor cable, the Selected speaker is muted. The Selected audio is routed to
the headset earpiece. The Unselected speaker remains active whether or not the
headset is connected to the NCS-C003.
3.2 Speaker
The speaker requirement is the same as that of the NCS-C250. The speaker(s) should
have a nominal impedance of 4-8 Ohms. Maximum power output is achieved with 4 Ohm
speakers. Speakers having an impedance of 4 Ohms should have a minimum power
rating of 4 Watts-rms while speakers with 8-Ohm impedance should have a minimum
power rating of 2 Watts-rms.
Speakers used with the NCS-C003 must be terminated in a 3.5 mm mono phone plug.
3.3 PTT Switch
Most any switch designed for PTT operation will function with the NCS-C003. The PTT
switch must be terminated in a ¼ inch mono phone plug.
4.0 Installation
4.1 Electrical Connections
See Figure 3 below for a typical connection diagram.
4.1.1 Install the NCS-250-HIB1-XX (XX = Length in feet) between the NCS-
C003 and the NCS-C250. This is accomplished by connecting the cable
end with the 8 pin Foster female connector to the 8 pin male Foster
connector located on the rear of the NCS-C003. CAUTION –Be sure to
properly align the connector keyways before engaging the Foster
connectors. Plug the other end of the cable (with RJ45 modular plug)
into the MIC jack on the rear of the NCS-C250.
4.1.2 Connect the speakers to be used for Selected and Unselected receive
audio to the 3.5 mm phone jacks on the rear panel of the NCS-C003.
4.1.3 Connect a PTT foot or hand switch to the ¼ inch mono phone jack on the
front panel of the NCS-C003. This jack is labeled “PTT”.

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4.1.4 Plug the headset plug into the mating jack of the headset adaptor cable.
Plug the 12 pin male connector on the other end of the headset adaptor
cable into the mating connector on the NCS-C003.
Figure 3 –Typical Connection Diagram
4.2 Mounting
The NCS-C003 is designed to be mounted on the underside of a tabletop. See figure 4
for mounting details.
PTT HEADSET
To SPEAKERS
SEL UNSEL To NCS-C250A
Radio Interface
RAD1 RAD1 RAD1 RAD1 EXPANSION MIC EXT MUTE SPEAKERS
New Communications Solutions, LLC
DC POWER
NCS-C250A (Rear Panel)
NCS-250-HIB1-XX
NCS-C003 (Rear Panel) NCS-C003 (Front Panel)
Speaker
Headset
Foot Switch
Hand Switch
Headset Adaptor Cable
-OR-

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NCS-C003 Instruction Manual, Rev A
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Figure 4 - Mounting
5.0 NCS-C003 Operation
The NCS-C003 requires no electrical adjustments prior to operating. Connect the NCS-C003 as
shown in Figure 3.
5.1 Operation with Headset Disconnected
When the headset is disconnected from the NCS-C003 (Note: headset adaptor must be
disconnected from the NCS-C003), Selected and Unselected receive audio should be
present on their respective speakers.
5.2 Operation with Dual Earpiece Headset Connected
When a dual earpiece headset is connected via the appropriate headset adaptor cable to
the NCS-C003, the Selected and Unselected speaker audio is muted. The Selected and
Unselected receive audio is routed to the right and left earpieces of the headset.
5.3 Operation with Single Earpiece Headset Connected
With a single earpiece headset connected via the appropriate headset adaptor cable to
the NCS-C003, the Selected speaker audio is muted and routed to the earpiece of the
headset. The Unselected speaker audio remains active.
5.4 Volume and Muting Controls
Independent Selected and Unselected volume and muting controls are available on the
front panel of the NCS-C250. These controls can be used to adjust the audio level or
mute the audio to the speakers and/or headset.
PTT HEADSET
NCS-C003
Self-Tapping Screws(4)
Front View
DESK TOP
REAR FRONT
NCS-C003
DESK TOP