Installation; Power Source Connection; Receiver Connection; Video Connection - Wavecom W 4010 User Manual

1. INSTALLATION

1.1 POWER SOURCE CONNECTION

On the rear panel is a small (2.1 mm) coaxial jack; the inner conductor has PLUS and the outside MINUS po-
larity. Connect the supplied cable to a regulated 12 to 14 Volt power source and pay attention that the red
wire goes to the POSITIVE (+) pole and the blue to the MINUS (–) pole.
The utilization of modern CMOS semiconductors results in a low power consumption of only 0.5 A. The de-
coder requires a stabilized voltage source. WAVECOM recommends the use of a somewhat larger than nec-
essary supply, if possible, about 2 to 3 Ampere output.
The W 4010 decoder has an internal fuse that protects not only against overcurrent, but also against wrong
polarity.

1.2 RECEIVER CONNECTION

The W 4010 demodulator needs audio from the receiver with a level of about 0.1 Vpp, up to a maximum of
5 Vpp. Many receivers have line or tape recorder outputs which have fixed levels, and it is recommended to
use these because their outputs are independent from the volume control. The large AGC range of the de-
coder permits using it with almost any receiver.
For the connection to the receiver, use the supplied cable which is shielded and has RCA plugs on both
sides. An adapter will have to be used for 2.5 or 3.5 mm coaxial receiver jacks.
1.3 VIDEO MONITOR INTERFACE
Use the supplied RCA-RCA shielded cable to connect the video output to the 75 Ohm input of the composite
video monitor. The video card has a 75 Ohm terminated output of 1.5 Vpp which can be used by all com-
monly available monitors.
A modulated TV output is deliberately not available, since TVs do not have the necessary bandwidth to give
sharp and clear text.

1.4 VIDEO DISPLAY SELECTION

Choose module A by pushing the module key while watching the monitor. Thereafter push [F1] to obtain the
menu to setup the parameters. The [F1] key allows configuring the video 40 characters × 18 lines or 80
characters × 24 lines.
The cursor mode can be adjusted with [F2]: no cursor, cursor no blinking, cursor slow blinking, cursor fast
blinking.
The video synch frequency can be adjusted with [F3] to 50 Hz or 60 Hz.
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