Power Supply - NCS -C250C Instruction Manual

When using a microphone with DTMF capability, the DTMF buttons can be used instead
of or in addition to the front panel controls. For DTMF control, the DTMF tones must be
generated in the microphone. The audio level of the tones should not exceed normal
voice level. NOTE: The DTMF Option must be enabled-see Section 10.3. The
diagram below shows the DTMF buttons that correspond to the front panel controls on
the C250C . Note that RAD5-RAD8 are only used with configurations using a C250C
with a C251 Expansion Unit as an 8 radio switcher.

6.0 Power Supply

6.1 Power Requirements
The NCS-C250C will operate with any 9-16 VDC power supply capable of providing at
least 2A continuous.
6.2 Power Connection
Power is supplied to the pigtail on the rear of the unit. The connector is an Anderson
Powerpole PP-15. As part of the accessory kit, a 10 foot power cable is supplied with a
mating connector attached. Connect the power cable to a 9-16 VDC source capable of
supplying at least 2A. Additional connectors are available from Powerwerx (web site:
http://www.powerwerx.com, telephone: 714-570-3303)
6.3 Polarity
Power cable polarity is: Red = +, Black = - (or chassis).
6.4 Fusing
Both power supply lines are fused with fast-acting 3A 5x20 mm fuses (Wickmann USA
series 191 or equivalent).
6.5 Using an AC Power Supply
The C250C can be operated from any well-regulated 9-16 VDC power supply capable of
delivering a minimum of 2 Amperes. Voltages higher than 16V may result in damage to
the circuitry.
6.6 Power Cable Clamp
The Power Cable Clamp is used to keep the Power Cable from separating from the
Power Pigtail in Mobile use.
NCS-C250C Instruction Manual Rev J
1 2 3
RAD1 RAD2 RAD3
4 5 6
RAD4 RAD5 RAD6
7 8 9
PA/RPT
RAD7 RAD8
*
0 #
SEL AUTO UNSEL
MUTE MUTE MUTE
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