User manual

Mailing: PO Box 3526, Bellevue, WA. 98009
Shipping: 13737 SE 26
th
St. Bellevue, WA. 98005
Toll Free: 800-259-7331 * Phone: [phone] * Fax: [phone]
www.sgcworld.com * Email: [e-mail]
5
4.2 SELECTING THE METER RANGE ..................................38
4.3 SELECTING THE OPERATING ANTENNA........................38
4.4 A
UTO VS
. M
ANUAL
A
NTENNA
S
ELECTION
.................39
4.5 F
RONT
P
ANEL
R
ESET
-L
OCK OPERATION
.....................41
4.6 D
O
-
IT
-Y
OURSELF
L
IGHT
B
ULB
T
EST
..........................42
5 THEORY OF OPERATION ............................................46
5.1 TUNING PROCESS AND OPTIONS .................................47
5.1.1 Tuning Process ........................................48
5.1.2 Impedance Detector .................................49
5.1.3 VSWR Detector........................................50
5.1.4 Phase Detector ........................................51
5.1.5 Central Processing Unit (CPU) .................53
5.1.6 Initialization ..............................................54
5.1.7 Jumper Settings .......................................55
5.1.8 Program Description.................................56
5.1.9 Tuning Paths............................................59
5.1.10 Internal B.I.T.E.* LEDs .............................64
5.2 S
CHEMATICS
...............................................................67
5.3 C
OMPONENT
L
OCATION
..............................................68
Mailing: PO Box 3526, Bellevue, WA. 98009
Shipping: 13737 SE 26
th
St. Bellevue, WA. 98005
Toll Free: 800-259-7331 * Phone: [phone] * Fax: [phone]
www.sgcworld.com * Email: [e-mail]
6
1 Introduction
Why did we create the MAC-200? To pull together the essential
tools for antenna management for stations with more than one
antenna. Discussions with amateurs and professionals have shown
that most have more than one antenna that they need to deal with,
yet the only place where all of these antennas come together is in
the radio room. Only there is it possible to manage which antenna
is in use and provide matching for all of them. Unfortunately,
existing tools just don’t go far enough.
From antenna switches, to complex, electronic, computer
controlled antenna switches … the only thing available has been a
switch. Existing devices allow directing RF to one antenna or
another from a group of antennas. Some manual tuners provide for
two or sometimes three antennas with an ability to tune them, but