MITSUBISHI ELECTRIC TOKKI SYSTEMS 9JKTD-L1620A User Manual Pt 15 stmt on pg 2 13 to 24 of 36 pages

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Document ID	65047
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Document Description	User Manual Pt 15 stmt on pg 2 13 to 24 of 36 pages
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Document Type	User Manual
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Filesize	62.89kB (786100 bits)
Date Submitted	1999-10-20 00:00:00
Date Available	2000-04-19 00:00:00
Creation Date	1999-10-19 22:11:36
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Document Lastmod	1999-10-19 22:12:20
Document Title	User Manual Pt 15 stmt on pg 2 13 to 24 of 36 pages
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2.2 PREPARATION
2.2.1 Power
(1) Confirm at first, that a DC power,llV~ 35V. is supplied from a DC source.
(or AC power source. option).
Check DC voltage at the time of checking.
(2) Turn power switch on by pulling the POWER knob. All settings and adjustments at tl
last power off are restored. For example, the unit starts and continues signal receptio
after power on when the unit was receiving before the last power off.
(3) Turn power switch off to terminate operation.
2.2.2 Frequency Memory
(1) Basic procedure to set a frequency (MANU mode)
a. Confirm that MANU is selected. If not. press MANU .
b. Enter frequency ~> Fre-uency, 6 di-its —>
Note: Bearing display (DEGREE) blinks until E is pressed.
Example: Enter W
Note : In case of missenu'y. press E to clear . then enter the correct number,
The first digit should be 0 or 5 . due to setting of SkHz step and die 2nd 1~7, due to the frequency
range of 1 1 0 ~ 1 70MHz., Erroneous input is not accepted.
Above procedures are rewritten as :- —> I Fre- uenc . 6 digits —> I
The unit starts reception when a frequency is set.
(1') To set a frequency in step of 5 kHz when the unit is receiving a frequency in MANU
mode.
Press as many times as wanted. The frequency increases or decreases in step of 5
kHz.
(2) Enter the frequency in a memory
After setting a frequency by procedure ( 1) or (1'), press M and set a channel number in
the order of a group number and a last digit, and finally. press. to enter the
frequency in the memory channel.
The basic procedures to enter a frequency in a memory channel is rewritten as
-»l*_~l~ be ~— .
2.2 PREPARATION
2.2.1 Power
(1) Confirm at first, that a DC power,llV~ 35V. is supplied from a DC source.
(or AC power source. option).
Check DC voltage at the time of checking.
(2) Turn power switch on by pulling the POWER knob. All settings and adjustments at tl
last power off are restored. For example, the unit starts and continues signal receptio
after power on when the unit was receiving before the last power off.
(3) Turn power switch off to terminate operation.
2.2.2 Frequency Memory
(1) Basic procedure to set a frequency (MANU mode)
a. Confirm that MANU is selected. If not. press MANU .
b. Enter frequency ~> Fre-uency, 6 di-its —>
Note: Bearing display (DEGREE) blinks until E is pressed.
Example: Enter W
Note : In case of missenu'y. press E to clear . then enter the correct number,
The first digit should be 0 or 5 . due to setting of SkHz step and die 2nd 1~7, due to the frequency
range of 1 1 0 ~ 1 70MHz., Erroneous input is not accepted.
Above procedures are rewritten as :- —> I Fre- uenc . 6 digits —> I
The unit starts reception when a frequency is set.
(1') To set a frequency in step of 5 kHz when the unit is receiving a frequency in MANU
mode.
Press as many times as wanted. The frequency increases or decreases in step of 5
kHz.
(2) Enter the frequency in a memory
After setting a frequency by procedure ( 1) or (1'), press M and set a channel number in
the order of a group number and a last digit, and finally. press. to enter the
frequency in the memory channel.
The basic procedures to enter a frequency in a memory channel is rewritten as
-»l*_~l~ be ~— .
Note : There are 3 groups, with group numbeis 0. 1, and 2 A channel number consists of a group number and
a last digit. For example. a channel number. 26 has a group number , 2, and a last digit, 6.
(3) Memory of a frequency in SRCH mode
When an interesting frequency is found in SRCH reception, hold that
frequency by pressing-and enter it into the memory with a channel
number by following procedures.
*“—’_~
(4) Enter a new SPOT frequency in a memory channel
Set a new frequency and enter the frequency to the memory channel. The old data is
canceled by overwriting.
(5) To erase all SPOT frequencies in the memory
a. Turn power switch off once.
h. Then turn power switch on while pressing. .
2.2.3 Selection
(1) Select a mode of reception and a mode of modulation
a. Select the mode firstly, MANU. SPOT. SRCH or SCAN.
1). Press the chosen mode key .
c, Check the mode of modulation. AM or FM. Press or pull the AM/FM knob when
necessary.
(2) Select DF/RCV (this selection may be changed while in operation)
Reception only is selected when DF/RCV switch is pulled. When it is pressed. both
reception and bearing measurement are made parallel. RCV is usually selected when
the level of signal is too weak to measure the bearing.
(3) Select HOLD (this selection may be changed while in operation)
There are two functions for hold‘ keeping bearing data while there is no signal and. in
SRCH or SCAN mode, lock the frequency.
a. Bearing data in MANU or SPOT mode (the frequency does not change)
When there is no signal, the bearing output fluctuates. When a signal is received.
instantaneous bearing data is displayed (data is continuously updated),
When the signal stops and HOLD is off, the bearing output fluctuates widely.
When the signal stops and HOLD is on, the bearing output keeps the last received data
until next signal comes.
h. Bearing data and frequency in SRCH or SCAN mode
When there is no signal, the bearing output fluctuates and frequency is automatically
swept. When a signal is received. frequency change stops and instantaneous bearing
data is updated every second.
When HOLD is off and the signal stops, the unit automatically restarts SRCH or SCAN
sweep and bearing output fluctuates.
When HOLD is on and the signal stops, the bearing output keeps the last data until next
signal comes and the frequency is locked When next signal comes at that frequency, the
bearing data is updated. To restart SRCH or SCAN, pressl.
2.2.4 Adjustment
(1) DIMMER
When the DIMMER knob is pulled. the azimuth card is illuminated Rotate the knob
clockwise to raise brightness of LEDs and LCD.
(2) VOLUME
Rotate the volume clockwise to increase the loudness of the speaker.
(3) GAIN
Rotate the GAIN knob to elevate RF sensitivity.
(4) SQUELCH
Rotate the SQUELCH knob clockwise to suppress the audio noise when there is no
signal.
(5) AZIMUTH (should be adjusted for true bearing measurement)
Rotate the AZIMUTH card according to the reading of the compass on board. The
reading of LED to the AZIMUTH card gives the true bearing of the radio signal.
Since azimuth setting is manual. AZIMUTH card should be rotated according to the
compass reading when true bearing is required.
2. 3 RECEPTION AND BEARING MEASUREMENT
2.3.1 Operation-MANU
(1) Basic procedure for manual reception
Confirm that MANU is ON. If not press MANU . Set a frequency and receive.
lm»
Note: a. When. s pressed-blinks in DF mode at the bearing
display (DEGREE).
b. The first digit should be zero. the second should be l,2.3,4.5,6 or 7.and the
last one should be 0 or 5,
c. When an incorrect number is entered, press. and enter correct number,
d. The relative bearing is displayed in DF mode when a signal is received.
e. When mere is no signal and HOLD is OFF, bearing data fluctuates.
f, When there is no signal and HOLD is ON, last bearing data remains.
(2) Change to another frequency in 5 kHz step while receiving in MANU mode.
or E —-
Note: Press. as many times as necessary. A press of E alters the direction
of frequency change.
2.3.2 Operation-SPOT
(1) Basic procedure for spot reception
Confirm that SPOT is ON. If not. press“
"eelEl
Notet a. When
display (DEGREE).
b. The relative bearing is displayed in DF mode when a signal is received.
c. When there is no signal and HOLD is OFF. bearing data fluctuates.
Call up a channel and receive.
s pressed, blinks in DF mode at the bearing
d. When there is no signal and HOLD is ON, last bearing data remains
(2) Change to another channel in the same group while receiving in SPOT mode.
Press Bias many times as necessary.
2.3.3 Operation-SRCH
(1) Basic procedure for search reception
Confirm that SRCH is ON. If not, press . Set a center frequency,
Fc . When E is pressed. searching starts in step of 5 kHz in the range
of Fci 500 kHz.
—> Center freuenc , 6 digits ->
(2) Change the direction of frequency sweep, press
(3) When a signal is received and frequency search stops, press several
times to find a lrcqucncy at which the level indicator shows maximum.
(4) When an interesting frequency is found in SRCH reception, store it in a
memor channel by following nrocedurel
—:~ l- ~fia
(5) When HOLD i on, incoming signal locks frequency search To restart
search, press
2.3.4 Operation-SCAN
(1) Set SCAN mode
Confirm that SCAN is ON. If not, press -.
When SCAN mode was selected at the last power off, SCAN restarts whei
the power switch is turned on.
(2) Check the group number. To change the group number. operate key as
following may be pressed a few times:
ele A
(3) When HOLD in on. incoming signal locks frequency scan. To restart
scan, press .
(4) SCAN pass
When a frequency is not necessary to be scanned while it is being
received, following procedure restarts scanning and that frequency is
skipped from the next scan:
(5) A frequency returns to be scanned again from being scan-passed. enter the last digit of
its channel number by following procedure.
I» a .
, l
2.3.5 Bearing Measurement ‘
(1) Bearing data relative to the bow direction is displayed when a signali
being received both in the digital display in 1' step and on the tin
display in 10' step
(2) The relative bearing is updated every second and it is an averaged valu
over a second.
(3) When the true bearing (relative to the North direction) is necessary, rea
the bow direction on the compass and rotate the azimuth card. Then th
true direction is shown on the azimuth card.
Digital true bearing is calculated as the sum of the bow direction and th
relative bearingi
Chapter 3 INSTALLATION
3.1 ANTENNA
3.1.1 Antenna Site
Following items should be important for antenna installation to minimize
disturbance to direction measurement since the performance of a short wave direction finder
is vulnerable to the influence of conductive bodies nearby, e.g., upper structure, stay cables.
derricks and other antennas.
(1) The separation of Adcock antenna and
the keel line should be minimized,
(2) The top of the fore mast, radar mast or
highest possible position is recommended
(3) The Adcock antenna should be situated 2111
or higher from the main antenna. Make the
horizontal separation larger than Im from
the main antenna by inserting insulators.
(4)The antenna should be 1m or higher than
radar antenna and the horizontal separation
from a tip of radar antenna should be 0.8m
or more.
; ormore
fo—
Ins}.lator
I lmormore JigiiMafinamenna
1m or
47—3-
0.8m
or adar
more scanner
Fig. 3 > B
Fig. 3 > A and Fig. 3 - B
Installation of antenna
When an H type Adcock antenna is installed on board a small fishing boat,
say 15m or smaller, refer to the following figure:
Adcocg
27 MHz " antenna f
Fig.4-A
Fig. 4-A and 4~B Position of antenna
When a H type Adcock antenna is installed on board a fishing boat, approx.
20~30m long, refer to the following figure:
Fig.5-A
Fig.5-B
Loop antenna
fl 4m or more
Fig.5-A. BB and 5-C Position of antenna
3.1.2 Flange
Weld a flange to a mast or a stanchion by paying attention to its direction One of
diagonals passing through the center of the flange should be parallel to the keel line (bow-
stern line). Work with care while welding, since the antenna cable is not heat resistive.
3.1.3 Antenna Cable
(1) Keep separation from heat sources as cable is not heat proof.
(2) Protect the cable from mechanical damage. When inevitable, protect cable in steel or
plastic pipe.
(3) Pay strict attention to welding after the cable has been laid.
(4) Avoid electromagnetic interference by keeping distance from power cables of other
equipments.
(5) Never lay the cable along stays or other wires which may cause large error
in bearing measurement
(6) Keep the length of a cable as fixed before shipment. To change the length oi a cable,
the main unit should be readjusted. Therefore. avoid to cut or elongate the cable.
NOTE: Two RF coaxial cables (RG-SSA/U) are required One for balanced modulator output signal and the
other for sense signal. The sense signal cable is connected with BNC and M type plug. The balanoed
modulator cable is connected with both BNC plugs BNC plug with M type plug is painted with red.
Any cable length is allowed, but its sensitivity is aflected by its length. The cable length is recommen
ded as short as possible, The difference in the length of the coaxial cables must be within 12cm.
to BNC plug <— ‘b w M type plug
Fig. 6 Antenna Cable Connection
‘ .1.4 Installation of Antenna
STANDARD CONNECT] ON
E Type Adcock Antenna
EA-a 51A
Flanae
(Weld to Mast)
Antenne Cable
Twin Coaxial Cable
Less than lSn
Mo del TD-L 1 620A
20nd Clble 3m
5 ' ——————— 1
:.J+AC Power Unitl
: } TG-1637cs |
L‘ (OPTION) 1
tf‘_'_i' _
Supplied by Snipan—L
Spen
00
0C
04
INPUT
0012/le
(D len
Q : Elm
INPUT i
3’ Acme/u
E» ACZUII
OPTIONAL CONNECTION
Recommend to use following Antenna Cab
le depending on required length
in order to avoid from attenuation. '
Antenna Cable: Twin Coaxial Cable.
17'~2'9m : 5D-2V
30m or longer : 8D-2V
Remark: When using SD-ZV or 8D-2V, additional joint cables for both
Cable ends are required as those have langer diameter than
that of RG58A/U.
Plu I
Antenna Cable gyp‘e’fufznr’iectlon
5D-2V Twin Armored Cable
8D-ZV Twin Armored Cable 1
Red Mark E
Joint Cable for Main Unil Side 3°"
RG-SBA/U 1m
L (Loop)
Red Mark
Red Mark Type M
Main Unit
1m Joint cable of main unit side has connectors for both cable ends
v (Vertical)

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Create Date                     : 1999:10:19 22:11:36-07:00
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