VL1
12V MINI AUDIO-FREQUENCY
INDUCTION LOOP AMPLIFIER
Approved document No. DCM0003479 Rev 1 • Page 1 of 8
The VL1 is a true current mode audio-frequency induction loop amplifier. Its compact
design, 12V d.c. operation and availability in a variety of kit formats make it ideally
suited for use in:-
• Cars, taxis, buses and other private/commercial vehicles (VL1/B1 or VL1/B2 kits)
• Ticket counters and other desktop applications (VL1/C kit)
• Access control applications (VL1/A kit)
In addition to this instruction manual, all of the above kits include Quick Start installation
guides specific to the application(s) for which they are intended. These guides should
always be referenced in conjunction with this manual prior to installation.
Important notes ................................................................................................................................... 2
Safety guidelines .................................................................................................................................. 2
What is an audio frequency induction loop system? ...................................................................... 3
An overview of the VL1 induction loop amplifier ........................................................................... 4
Planning an induction loop system .................................................................................................... 5
Installation, system set-up and testing ........................................................................................... 6/7
Troubleshooting ................................................................................................................................... 8
Technical specification ......................................................................................................................... 8
Summary of Contents for VL1
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