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NCI Technologies
• Telephone system interface for paging.
• Full range volume and tone controls.
• Output fully short circuit protected.
• Separate bass & treble controls for paging and music.
• Adjustable background music.
User Manual
Telecom Paging Amplifiers
Models NCI 20, NCI 50 & NCI 100
FEATURES
for
• Adjustable paging pretone.
• Dry contact or VOX music mute (for telephone system applications)
• Integrated connector for optional system expansion modules.
• Wall mounting.
• NRTL/C certified (Complies with both UL & CSA standards)
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Summary of Contents for NCI Technologies NCI 20
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Page 1: User Manual
NCI Technologies User Manual Telecom Paging Amplifiers Models NCI 20, NCI 50 & NCI 100 FEATURES • Telephone system interface for paging. • Adjustable paging pretone. • Dry contact or VOX music mute (for telephone system applications) • Full range volume and tone controls. -
Page 2: Specifications
70.7 Volts rms • Frequency response: ±3 dB, 100 ≈ 20,000Hz • Power source: 120V AC, 60Hz • Inputs: Tel/Mic 600Ω balanced • Power Consumption: NCI 20 48 watts Music 10kΩ unbalanced NCI 50 80 watts NCI 100 176 watts •... -
Page 3: Output Connections
OUTPUT CONNECTIONS Connect the speaker wiring to the terminal block at the left marked OUTPUT. Follow the guidelines for Class 2 Wiring making sure that the total load does not exceed the rated OUTPUT maximum load as marked on the door of your particular model amplifier. -
Page 4: Dip Switch Settings
DIP SWITCH SETTINGS DIP Switches DIP SWITCHES (1-7) Set the DIP switches according to your particular system installation and requirements as follows. Note: Switch 8 is not used. A) DIP Switches 1&2 – TEL/MIC 1 2 3 4 5 6 If connected to a phone system page port set both switches to the ON position. -
Page 5: Power Control
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected; • Consult the dealer or an experienced radio/TV technician for help. Any changes or modifications not expressly approved by NCI Technologies could void the user’s authority to operate the equipment. - Page 6 Installation Examples - Typical Paging from a Telephone System Page Port with - Typical Paging / Public Address using a Microphone and Control Contacts VOX Control for Music Mute 1 - Connect voice source to 1 - Connect mic to pins 1 & 2 1 2 3 4 5 6 1 2 3 4 5 6 pins 1 &...