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TS
|
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RADIO
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MAT~i100
me
For abnormal tuning
TS
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TT
ete
RADIO
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MAT -100
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For through operation
MAT-!00
TS
RADIO
|
TT
i
Fig. 1 Interface timing chart
¢ Manual Tuning
The MAT-100 can set the manual tuning. For manu-
ally tuning, change DIP switch $4 of the LED unit from
AUTO to MANUAL.
When
DIP switch S4 Is set to
MANUAL,
relays K1 and K2 are selected so that a
sensor circuit is through-connected.
LED
indicator
D48 goes on to indicate tuning completion.
When
DIP switches $1 through S3 are selected,
relays K1 and K2 are set on or off. The status of $1
through S3 is sent to 1C10 through IC13 of the MAT-
100 to drive the relays. Table 1 gives the relationships
between the DIP switch settings and operation of the
relays.
109
TRC-70
¢
Control cable terminals
+13.6V
MAT-100's +13.6 V DC
GND
Ground
|
TS
Bidirectional control terminal that controls tun- '
ing start and completion via a remote control-
ler and reports through start and completion
via the MAT-100.
TT
Bidirectional
control terminal
that controls
through start and completion via a remote
controller and controls tuning start and com-
pletion via the MAT-100.
GND
Ground
ANT.C
Determines the antenna current via the MAT-
100 and sends it to the remote controller.
¢
Tuning Circuit Selection
The tuning circuit is used as a PI matching circuit by
connecting jumpers J5 and J6. When the tuning cir-
cuit is not matched using a PI match, remove the Pl
circuit and use an L-type matching circuit.
The PI
circuit is normally used.
oe
DIP switch
|RElay No. | DIP switch-on sequence operation
$1
1
K-3
L1 through
2
4
L2 through
3
5
L3 through
4
6
L4 through
5
7
L5 through
6
8
L6 through
7
g
L7 through
8
10
L8 through
9
11
L9 through
10
13
L10 through
S21
14
| L11 through"
2
12
Capacitive circuit's IN switch ON
3
15
Capacitive circuit's OUT switch ON
4
16
C76, 77 ON
5
17
C78, 79 ON
6
18
C80, 81 ON
7
19
C82, 83 ON
8
20
C84 ON
9
21
C85, 86 ON
10
22
C87, 88 ON
$3
1
23
C89, 90 ON
2
24
C91, 92 ON
Table 1 DIP switch and relay number
7
110
RC-70
MAT-100 (AUTOMATIC ANTENNA TUNER}
@ NC
@ttT
RADIO
AK Bono
[fx
|
MAT-100
GND
7 a
®rTs
© FsB
MAT-100
TRC-70
Pin name
Description
Pin name
Description
+13.6V | 13.6VDC input
NC
Unused
GND
Ground
TT
Control signal input/output
TS
Control signal input/output
GND
Ground
|
TT
Control signal input/output
AC2
Antenna current
GND
Ground
TS
Control signal input/output
ANT. C | Antenna current output
FSB
Tuner power output
Fig. 2 Control cable connection
¢ Sensor block
An attenuator consisting of R1 through
R7 is in-
serted into the sensor to stabilize impedance and re-
duce unwanted
waves
during tuning.
High power
signals are input from the remote controller to the J1
terminal and passed through this attenuator.
The high power signal is tapped off from the main
signal and passed through R11 to the frequency read
block.
The forward wave and reflected wave signals of the
HF signal are detected by a coupler consisting of L12,
L13, R9, and R10; converted into a control voltage us-
ing D1 and D2; then sent to the analog-to-digital con-
verter.
The converted
digital signal is used as an input
signal for the input power check and reflection coeffi-
cient operation.
The forward and reflected waves are sent through
buffers Q1 and Q2 to a DBM consisting of L16, L17,
and D47 and sent to comparator IC15 (1/2) as imped-
ance signal IZI. Impedance signal IZ] is compared with
a 50-ohm impedance.
Voltage and current signals are sent to a DBM con-
sisting of L14, L15, and D46; compared
with each
other, then extracted as a phase signal.
Input power level range : 8~15 W
1. Overpower
|
When power exceeding approximately 20 W is de-
tected during the power check, a 100 ms counter is
set. When a tuning start (TS) is canceled after 100 ms
or within 100 ms, the through mode is entered.
1 : Power check
2: 7S check
|
3: Returned to 1 if within 100 m
* If the power is proper in step 1, stop the above
operation and proceed to the next operation.
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