Vectronics VEC-512 - Manual

VEC-512 TunerAid
INTRODUCTION
This new VEC-512 TunerAid lets you tune up your antenna tuner without
transmitting a single milliwatt! You can't cause QRM - there's no radiated
power. You can precisely tune your antenna tuner for a 1:1 SWR - no additional
"tweaking" needed.
Protect your transceiver and antenna tuner. Avoid dangerous overheating and
arcing caused by high SWR and long tune-ups. It's easy to use. Plugs between
your transceiver and antenna tuner.
Adjust your tuner for a null in receiver noise by ear or by S-meter and you have
1:1 SWR!
Tuning noise is modulated to make it easy to recognize.
And if you accidentally transmit, you won't burn up your VEC-512 TunerAid.
Vectronic's exclusive RF*Guard™ automatically bypasses your VEC-512 to
prevent damage. Works with all transceivers from 160 through 6 meters.
INSTALLATION AND OPERATION
The VEC-512 TunerAid connects between your transceiver and antenna tuner. A
12 Vdc, 300 mA power supply such as the AC-12 should be used to provide a
proper power source for the VEC-512 TunerAid. Use a standard 2.1 mm coaxial
plug with the center being positive and the sleeve being ground. Ensure that the
POWER switch on the front panel is in the OFF position (out), then connect the
power supply to the POWER jack on the rear panel.
Note: The VEC-512 may also be powered by a 9V alkaline battery. to access
the battery connector, ensure the POWER switch on the front panel is in
the OFF position (out), remove the screw on each side of the VEC-512
and remove the cover. Be sure to replace the cover before operating
the unit!
Connect the Antenna out jack on your transceiver to the TRANSMITTER jack
and antenna tuner to the ANTENNA jack of the VEC-512. Apply power to your
transceiver and tune to the desired frequency. Next, apply power to the VEC-512
by pressing the POWER switch in. The PWR LED on the front panel of the
VEC-512 should begin flashing and you should hear a pulsing "white noise"
from your receiver. Adjust your tuner for a null in receiver noise by ear or by S-
meter and you have 1:1 SWR! Your antenna is now matched to your