Advent VISLINK Newswift 90 User manual
TECHNICAL OPERATION HANDBOOK
For
The Document is supplied on the express terms that it is to be
treated as confidential and that it may not be copied, used or
disclosed to others for any purpose except as authorised by
Vislink.
ADVENT COMMUNICATIONS
Vislink House
27 Maylands Avenue
Hemel Hempstead
Hertfordshire
HP2 7DE
England
Telephone: National 01442 431 300
Fax: 01442 431 301
24 Hour Support +44 (0)1442 431 410
Advent Communications is a brand name of Vislink International
NEWSWIFT MOTORISED SYSTEM
Document No. 207160 Rev. B9
VISLINK
Newswift 90-180 Motorised Antenna
This page left intentionally blank
VISLINK
Newswift 90-180 Motorised Antenna
CONTENTS
AMENDMENT RECORD SHEET 1
EMC DECLARATION 2
WARNINGS AND HAZARDS 3
ADDITIONAL SAFETY INFORMATION 4
STOWAGE WARNING 4
1.ANTENNA 5
1.1INTRODUCTION 5
2.SPECIFICATION 6
2.1RF 6
2.2DRIVE CONTROL UNIT 7
2.3MECHANICAL 7
2.4ENVIRONMENTAL SPECIFICATION 8
3.INSTALLATION 9
3.1ANTENNA AND MOUNT 9
3.2ANTENNA PREPARATION 10
3.3FITTING THE ANTENNA ON THE MOUNT 11
3.4FUNCTIONAL DESCRIPTION 13
3.5OPERATING PROCEDURE 13
3.6MANUAL OPERATION 13
3.7GENERAL 13
3.8MULTIBAND FEEDARM FITTING AND REMOVAL INSTRUCTIONS 13
4.DRIVE CONTROL UNIT 14
4.1INTRODUCTION 14
4.2SPECIFICATION 14
4.3FRONT AND REAR PANEL 15
4.4REAR PANEL 16
4.5DCU4000 LEAD CONNECTIONS 16
4.6INTERNAL LAYOUT 17
4.7DCU INTERNAL ACCESS 17
4.8CABLE CONNECTIONS 17
4.9SURFACE MOUNT REPLACEABLE FUSES 17
4.10FUNCTIONAL DESCRIPTION 18
4.11AXIS DRIVE DESCRIPTION 19
4.12AXIS POSITION MONITORING 19
4.13AXIS POSITION CALIBRATION 19
4.14AXIS POSITION AND STOWING CHECKS 20
4.15SAFETY MICRO-SWITCH OPERATION AND FUNCTION 20
4.16MANUAL BRAKE OVERRIDE OPERATION AND FUNCTION 20
4.17ALARMS 21
4.18F1: DCU POWER SUPPLY VOLTAGE LOW 21
4.19F2: DCU MOTOR SUPPLY FAILURE 22
4.20F3: MOTOR DRIVE MODULE INHIBIT 22
4.21F4: INCLINOMETER FAILURE 22
4.22F5: INCLINOMETER SUSPECT 22
4.23F6: DRIVE STALL DETECTED 22
4.24F7: DRIVE FREEWHEEL DETECTED 22
4.25F8: DRIVE END OF TRAVEL DETECTED 23
4.26F9: TX POLARISATION SWITCH FAILURE (OPTIONAL) 23
4.27F10: AZIMUTH STOW SENSOR FAILURE 23
4.28F11: ELEVATION STOW SENSOR FAILURE 23
VISLINK
Newswift 90-180 Motorised Antenna
4.29F12: POLARISATION SENSOR FAILURE 23
4.30F16: DCU FPGA PROGRAMMING FAILURE 23
4.31F17: MANUAL BRAKE OVERRIDE ON 23
4.32F18: AZIMUTH STOWING FAILURE 24
4.33F19: ELEVATION STOWING FAILURE 24
4.34F20: POLARISATION STOWING FAILURE 24
4.35F23: POWER UP STATE SUSPECT 24
4.36F25: STOW SENSOR POWER SUPPLY ERROR 24
4.37F26: MRD POWER SUPPLY ERROR 24
4.38F27: INCLINOMETER POWER SUPPLY ERROR 24
4.39F28: FPGA WATCHDOG TRIGGERED 24
4.40F31: HAND HELD CONTROLLER ACTIVE 24
4.41F33: FIN 1 OVER TEMPERATURE 25
4.42F34: FIN 2 OVER TEMPERATURE 25
4.43F35: FIN 3 OVER TEMPERATURE 25
4.44F36: FIN 4 OVER TEMPERATURE 25
4.45F37: FIN 5 OVER TEMPERATURE 25
4.46F38: WGS POWER SUPPLY FAILURE 25
4.47F39: BRAKE POWER SUPPLY FAILURE 25
4.48F40: FAN POWER SUPPLY FAILURE 25
4.49F44: AZIMUTH BRAKE DISCONNECTED 25
4.50F45: ELEVATION BRAKE DISCONNECTED 25
4.51F51:EP2PPROM CHECKSUM ERROR 25
4.52F52: SOFTLIMIT DATA ERROR 25
4.53F53: WOODED AREA DATA ERROR 26
4.54F54: CALIBRATION AREA DATA ERROR 26
4.55F55: FPGA COMPATIBILITY ERROR 26
4.56F56: EXTERNAL FLASH ERASING/WRITING ERROR 26
4.57REMOTE CONTROL 26
4.58SERIAL INTERFACE: SOFTWARE PROTO-COL 26
4.59PACKET PROTOCOL 27
4.60COMMANDS, QUERIES AND RESPONSES 28
4.61DCU COMMAND SET 28
4.61.1CONTROL REMOTE COMMANDS 30
4.61.2COMPASS INTERFACE COMMANDS 34
4.61.3UPDATE STATUS COMMANDS 37
4.61.4ANTENNA DATA 42
5.NEWSWIFT MAINTENANCE 45
5.1DISH 45
5.2AZIMUTH INTERNAL SPUR GEAR 45
5.3POLARISATION DRIVE 45
5.4REAR FEEDHORN PLASTIC BUSH 45
5.5FEEDHORN WINDOW 45
5.6FLEXIBLE WAVEGUIDE 45
5.7ALL SCREWS/BOLTS 46
5.8RADIATION CHECK 46
5.9POLARISATION WAVEGUIDE SWITCH (KU ONLY) 46
5.10SATELLITE TRANSMISSION EQUIPMENT 46
6.WARRANTY 47
6.1WARRANTY INFORMATION 47
6.2CLAIM FOR DAMAGE IN SHIPMENT 47
6.3FIELD SERVICE 47
6.4SHIPMENT OF REPAIR PARTS TO FIELD 47
VISLINK
Newswift 90-180 Motorised Antenna
6.5RETURN PROCEDURES 47
6.6TRANSPORTATION AND PACKAGING 48
6.7AUTHORISATION FOR EVALUATION 48
7.ANTENNA MOUNTING FRAME DESIGN GUIDELINES 49
7.1INTRODUCTION 49
7.2LOAD SUMMARY 49
7.3VEHICLE ROOF FRAME DESIGN 51
7.4TYPICAL ANTENNA INSTALLATION IMAGES: 52
8.FIGURES: 54
8.1DCU FUSE RATINGS 54
FIGURE 1 54
FIGURE 2 54
FIGURE 3 54
FIGURE 4 54
FIGURE 5 55
FIGURE 6 55
FIGURE 7 55
FIGURE 8 55
FIGURE 9 55
FIGURE 10 55
FIGURE 11 55
FIGURE 12 55
FIGURE 13 56
FIGURE 14 56
FIGURE 15 56
FIGURE 16 56
FIGURE 17 – DCU4000 INTERNAL LAYOUT – 209124 57
FIGURE 18 - SIDE ELEVATION 0.9M NEWSWIFT DWG 401971 ISS DA SHT 1 57
FIGURE 19 – SIDE ELEVATION 0.9M NEWSWIFT DWG 401971 ISS DA SHT 2 58
FIGURE 20 – SIDE ELEVATION 1.2M (KU-BAND) DWG 108230 ISS B SHT 1 58
FIGURE 21 – SIDE ELEVATION 1.2M (C-BAND) DWG 110358 ISS DA SHT 1 59
FIGURE 22 – PLAN ELEVATION 1.2M DWG 108230 ISS B SHT 2 59
FIGURE 23 – SIDE ELEVATION 1.5M (KU-BAND) DWG 401908 ISS DB SHT 2 60
FIGURE 24 – SIDE ELEVATION 1.5M (C-BAND) DWG 110357 ISS DA SHT 2 60
FIGURE 25 – PLAN ELEVATION 1.5M DWG 109509 ISS A SHT 1 61
FIGURE 26 – SIDE ELEVATION 1.8M DWG 116511 ISS 1 SHT 1 61
FIGURE 27 – PLAN ELEVATION 1.8M DWG 116511 ISS 1 SHT 2 62
FIGURE 28 – ROTARY WAVEGUIDE EXIT (KU-BAND) DWG 108230 ISS B SHT 3 62
FIGURE 29 – ROTARY WAVEGUIDE EXIT (C-BAND) DWG 110358 ISS DA SHT 3 63
FIGURE 30 – FIXING RING DWG 108230 ISS A SHT 3 63
FIGURE 31 – MOUNTING POINTS 64
FIGURE 32 – SATELLITE GEOMETRY 65
VISLINK
Newswift 90-180 Motorised Antenna 1
AMENDMENT RECORD SHEET
ISS DATE ECR DESCRIPTION OF CHANGE Author
A 08/2000 N/A Newswift Manual inc. ACU400 JM
B 09/2001 N/A ACU4000 Manual Removed ref. to ACU4xxx Inserted JM
B1 02/2002 6757 Elevation Adjustment Changed to 90° and Other Minor
Changes JM
B2 03/09/2002 6872/6920 Maintenance Information Added. Details of Fuses
Clarified and Other Minor Changes JM
B3 31/01/2006 N/A Add X, DBS and 1.8m Antenna Details JM
B4 22/04/2006 7977 Rebranded JM
B5 13/12/2007 N/A Updated for DCU4000 JM
B6 30/06/2008 N/A Add Multiband Feedarm Fitting Instructions JM
B7 03/08/2009 N/A Update First Aid Information. Add Waveguide Switch
Maintenance JM
B8 29/04/2010 N/A Add Mounting Frame Design Guidelines JM
B9 09/08/2013 N/A Updated SC
VISLINK
Newswift 90-180 Motorised Antenna 2
EMC DECLARATION
VISLINK
Newswift 90-180 Motorised Antenna 3
WARNINGS AND HAZARDS
FAILURE TO OPERATE AND USE THE EQUIPMENT OTHER THAN INSTRUCTED IN
THE MANUAL MAY RESULT IN ELECTRIC SHOCK.
HAZARDOUS WARNING LABELS
NON-IONISING RADIATION
CAUTION – HEAVY ITEMS
CAUTION – MOVING PARTS
TEST/ALIGNMENT OF UNITS FITTED WITH AC/DC POWER SUPPLY
UWARNINGUHazardous voltages are present with lid removed.
Diagnostic work on AC powered units or PCBs must be carried out in a test area designated
and equipped for live testing. If units have recently been in operation, time must be allowed
for the discharge of capacitors before handling the unit.
Hazardous AC voltages present.
Possible source of radiation hazard, normally
located at waveguide connections, waveguide
joints and antennas.
During operation of the antenna
there will be moving parts; do not
touch whilst in motion.
Some items of equipment may weigh
in excess of 25kg, do not attempt to
move or lift without assistance.
VISLINK
Newswift 90-180 Motorised Antenna 4
ADDITIONAL SAFETY INFORMATION
Most of the microwave energy
is contained within this beam
Close Up View
Far View
The European Standard that defines power levels is ETS300327.
The microwave power density limit is 10w/m sq.
For a 125w amplifier and 1.2m antenna, the shaded area represents power levels above the
limit. Outside of this area, the power level is below the limit.
This example shows the beam at 21 deg elevation.
The distance R (m) is approximately
R = antilog (eirp/20 - 1.05) where eirp is dBw.
STOWAGE WARNING
If the Newswift antenna is fitted to a vehicle, ensure that it is stowed when the vehicle is in
motion. The antenna has not been designed to be deployed in this condition and the
resulting forces may exceed the design criteria.
Care should be taken that nothing obstructs the antenna when it is moving as injury or
damage to the antenna or its surroundings may result.
VISLINK
Newswift 90-180 Motorised Antenna 5
1. ANTENNA
1.1 INTRODUCTION
The Newswift Motorised System is a highly compact satellite earth terminal, capable of
operating with most of the geostationary C, X, Ku and DBS band satellites, which are
currently in orbit or are planned.
Its function is to transmit TV programming (or communications, depending upon the options
ordered) and to be capable of monitoring its own transmissions from many sites around the
world.
The system has been designed to contain all the elements that allow reliable transmissions
to be made. The many variants allowed with this flexible design are contained within a
stylised cover or remote in an operator’s environment.
The antenna and associated parts may be mounted either on a vehicle or a permanent base
while the control elements are mounted in a standard 19” rack system in a benign
environment.
The Antenna Control Unit allows the operator to deploy or stow the antenna with minimum
effort from within the operator’s environment.
The elevation handle, operation manual and wiring kit to release brakes are stowed in the
vehicle cab.
VISLINK
Newswift 90-180 Motorised Antenna 6
2. SPECIFICATION
2.1 RF
Type Single circular
Diameter 0.9m, 1.2m, 1.5m, 1.8m
Configuration Offset
Mount Elevation over Azimuth
Frequency
Tx C-Band 5.85-6.425 GHz
X-Band 7.9-8.4 GHz
Ku-Band 12.75-13.25 GHz or 13.75-14.50 GHz
DBS-Band 17.3-18.1 GHz (optional 18.4GHz)
Rx C-Band 3.7-4.2 GHz
X-Band 7.25-7.75 GHz
Ku-Band 10.95-12.75 GHz
DBS-Band 10.95-12.75 GHz
0.9m 1.2m 1.5m 1.8m
Gain dBi Tx C-Band 38.0 39.7 Defined at the
OMT flange
Tx X-Band 40.0 41.5
Tx Ku-Band 40.7 43.1 45.1 46.5
Tx DBS-Band 47.2 48.6
Rx C-Band 34.2 36.0
Rx X-Band 39.2 40.8
Rx Ku-Band 38.5 41.0 43.1 44.4
Rx DBS-Band 43.1 44.4
WG Loss C-Band 2.0 dB
Ku-Band 1.2 dB
Off-axis gain Tx 29-25 logθ100λ/D < 0 < 20°.
-3.5 20 < 0 < 26.4°.
32-25 logθ26.4 < 0 < 48°.
Rx 32-25 logθ100λ/D < 0 < 48°.
Polarisation Linear-orthogonal
Cross polar isolation -35 dB rel co-polar gain within 0.2
VSWR Tx 1.3:1
Rx 1.35:1
Port/Port isolation TX/RX (14.0-14.5) 40 dB (110dB incl filter)
Rx/Tx (10.95-12.75) 30 dB
Waveguide Flanges
C-Band CPR137
VISLINK
Newswift 90-180 Motorised Antenna 7
X-Band UBR84/CPR112
Ku-Band PBR120
DBS-Band UBR140
Feed 2 port ( 3,4 port optional)
Power (RF) 500w cw
2.2 DRIVE CONTROL UNIT
Antenna Limits
Polarisation ± 92°
(
Ku, feedhorn cartrid
g
e dependent
)
Azimuth ±180°
Elevation 6° to 90°
Display
Resolution 0.1°
Range ±200°
(Elevation, Azimuth Polarisation)
Power
Electronics
Supply 12v, 2A dc.
Motor Supply 36v, 5A dc.
2.3 MECHANICAL
Azimuth adjustment ± 180°
Elevation adjustment +6° to +90°
Pol. adjustment ± 45° fine (motorised) & 90° coarse (WG switch).
± 90° (motorised) Optional
Motorisation Azimuth
Elevation
Polarisation
Speeds (°/s)
Azimuth 4/0.4/0.1
Elevation 2/0.4/0.1
Polarisation 5/0.4/0.1
Dimensions 0.9m 1.2m 1.5m 1.8m
Antenna Assy Fig 18,19, 31 Fig 20, 21, 22,
31 Fig 23, 24, 25,
31 Fig 26,27
Rotary W/G
(option) Fig 28 Fig 28, 29 Fig 28, 29 Fig 28, 29
Motor drive Included in antenna ass
y
Weight 94 kg 100kg
VISLINK
Newswift 90-180 Motorised Antenna 8
2.4 ENVIRONMENTAL SPECIFICATION
The system will be used outdoors, exposed to the prevailing ambient conditions.
Temperature
Operational -20 to +50°C
Survival -40 to +70°C
Humidity 0 to 100 % RH
Wind
Operation 21m/s (17m/s for 1.8m
antenna)
Degraded Operation 28m/s (23m/s for 1.8m
antenna)
Survival 50m/s, antenna stowed
(40m/s for 1.8m antenna)
Shock and Vibration As encountered in
transportable systems.
Snow, Dust, Hail Not defined.
V
V
ISLI
N
3. INS
T
3.1
A
The Ne
w
the top a
Carefully
report an
Ensure t
h
"Installat
i
complet
e
Note: Th
you wan
t
Attentio
n
bolts, bol
N
K
T
ALLATI
O
A
NTENNA
A
w
swift anten
n
nd sidewall
s
remove int
e
y damage i
m
h
at the vehi
c
i
on informat
i
e
d installatio
n
e drawings
t
to mount t
h
n
- it is imp
o
ts 'B' in pict
u
O
N
A
ND MOU
N
n
a will arrive
s
of the tran
s
e
rnal transp
o
m
mediately.
c
le has bee
n
i
on for New
s
n
is given in
indicate tha
t
h
e antenna i
n
o
rtant that a
c
u
re 3, for th
e
N
T
in a woode
n
s
portation b
o
o
rt supports
n
prepared i
n
s
wift", see F
picture two
.
t
the antenn
n
any other
c
cess be left
e
antenna t
o
n
transport
a
o
x leaving t
h
and inspec
t
n
accordan
c
igures 19, 2
.
a should st
o
orientation,
t
below the
m
o
be fitted.
tion box, se
e
h
e base pall
e
t
the antenn
a
c
e with draw
i
1, 29 and 3
0
o
w facing th
e
consult the
f
m
ounting fla
n
e
picture on
e
t and ante
n
a
for damag
i
ng number
X
0
.
A
n exam
p
e
rear of the
f
actory first.
n
ge to allo
w
e. Remove
n
na in place
.
e. Please
X
02-10823
0
p
le of a
vehicle. If
w
the retainin
.
0
g
V
V
ISLI
N
3.2
A
Remove
transport
raised s
u
Weight 1
removed
Note: D
e
antenna
N
K
A
NTENNA
P
the bolts us
frame to th
e
u
pport, such
44 Kg. This
. These are
e
termine the
is transport
e
P
REPARA
T
ing a spann
e
e
transport
b
as trestles i
arrangeme
n
indicated a
s
required a
z
e
d in the azi
m
T
ION
e
r and sock
e
b
ox. Using t
h
n picture fo
u
n
t enables t
h
s
holes 'B' in
z
imuth zero
p
m
uth 0 (zer
o
e
t, bolt hole
s
h
e transport
u
r, located c
h
e antenna
r
picture 3.
p
osition of t
h
o
) degree p
o
s
'A' in pictu
frame only,
lose to the
a
r
etaining bol
h
e antenna
o
o
sition.
re three, se
c
lift the ante
n
a
ctual moun
t
l
ts to be ea
s
o
n the mou
n
c
uring the
n
na on to a
t
. Max Gros
s
s
ily and safe
l
n
t. The
s
l
y
V
V
ISLI
N
3.3
F
Locate r
a
into the
e
Release
DCU fro
n
Connect
the '9 pi
n
amps m
a
DCU fro
n
approxi
m
the adap
t
shown in
indicated
should t
h
Attentio
n
them pro
N
K
F
ITTING T
H
a
tcheting ha
n
e
levation rot
a
the two cat
c
n
t panel. Th
e
the 'power
a
n
'D' type so
c
a
ximum curr
e
n
t panel to e
m
ately 120 d
e
t
er. Finally r
picture five
.
on Figure
3
h
en be mad
e
n
:Time sho
perly befor
e
H
E ANTEN
N
n
dle with sh
a
tion axis o
n
c
hes on the
s
e
re is a bra
k
a
dapter ma
n
c
ket' on the
a
e
nt, across
t
levation axi
s
e
grees to th
e
e
move the
w
.
Attach the
3
1 in the Fig
e
taut.
uld be take
n
e
lifting.
N
A ON THE
aft, supplie
d
n
the left ha
n
s
ide of the
c
k
e release s
w
n
ual' supplie
d
a
ntenna. Th
t
he terminal
s
s
, marked '
E
e
horizontal
w
hite front c
o
two lifting r
o
u
res sectio
n
n
to stow a
w
MOUNT
d
separately
n
d side of a
n
c
overs. Rem
w
itch prese
n
d
separatel
y
en connect
s
, see pictu
r
E
'. Turn the
h
then turn s
w
o
ver from th
o
pes to the
a
n
at the bac
k
w
ay any cabl
e
(or stored
w
n
tenna, as s
ove the rea
r
n
t, which sh
o
y
(or sto
r
ed
w
a 12V d.c.
P
r
e six. Turn
t
h
andle cloc
k
w
itch to off
p
e antenna
b
a
ntenna. Th
e
k
of this man
e
s from the
a
w
ithin the ve
h
een in pictu
r
r
white cove
r
o
uld be in th
e
w
ithin the v
e
P
ower sourc
t
he brake s
w
k
wise until th
p
osition and
b
y sliding in
d
e
exact liftin
g
n
ual. The lifti
a
ntenna an
d
h
icle cab),
r
e five.
r
and look a
t
e
off positio
n
e
hicle cab),
t
e with 3
w
itch on the
e reflector i
s
disconnect
d
irection
g
points are
ng harness
d
secure
t
n
.
t
o
s
V
V
ISLI
N
Remove
ropes, a
n
supporte
d
identical
cover. C
o
and feed
both ada
and pow
e
Guidelin
e
WARNI
N
N
K
the antenn
a
n
d carefully
l
d
at the fro
n
size to the
n
o
nnect 'pow
e
arm to sto
w
pter and po
w
e
r source.
e
s on the de
N
G:
Do not li
a
retaining b
o
l
ift the ante
n
n
t, as it will ti
n
ew mounti
n
e
r adapter
M
w
position a
n
w
er supply.
sign of a ve
ft by reflect
o
o
lts as sho
w
n
na to the m
o
p otherwise
.
n
g flange. R
e
M
anual' agai
n
d turn switc
Replace re
a
hicle mount
i
o
r or glass fi
w
n in picture
o
unting pos
i
.
Secure th
e
e
move liftin
g
n and turn
s
h to off posi
t
a
r white cov
e
i
ng frame a
r
bre covers.
seven. Tak
e
i
tion. The a
n
e
antenna wi
g
ropes, and
s
witch to 'E',
t
ion. Remo
v
e
r. Route th
e
r
e shown in
s
e
the strain
i
n
tenna will h
th new scre
w
replace wh
i
elevation. L
v
e handle, di
e
cables to t
s
ection 7.
i
n the lifting
ave to be
w
s of
i
te front
ower reflect
sconnect
he controlle
r
o
r
r
VISLINK
Newswift 90-180 Motorised Antenna 13
3.4 FUNCTIONAL DESCRIPTION
The functional limits are specified in section 2.1.
3.5 OPERATING PROCEDURE
The normal operation of the antenna is given in the ACU4XXX operation manual.
3.6 MANUAL OPERATION
The antenna may be moved manually if there is a problem with the control circuit. Before the
azimuth or elevation axis may be manually moved the electric brake must be disabled, this
procedure is described in the DCU Manual.
The azimuth axis is moved by rotating the thumb wheel on the azimuth drive assembly,
which is located below the rear top electronics enclosure panel.
The elevation axis is moved by rotating the elevation axis handle. The elevation axis handle
is inserted into the middle of the left hand end of the elevation axis.
The polar axis is moved by rotating the polar drive motor shaft located beside the feedhorn.
UNOTEU: Excessive azimuth and elevation movements are restricted by mechanical hard
stops. The polarisation axis is not restricted therefore care must be taken not to cause
damage at angles greater than 45 degrees or 90 degrees (non Polar WG Switch).
3.7 GENERAL
To remove the front and rear top electronics enclosure panels, slide horizontally away from
the antenna after the latches have been released. To replace the front and rear top
electronics enclosure panels, slide horizontally towards the antenna and ensure that the
latches are fully secure.
3.8 MULTIBAND FEEDARM FITTING AND REMOVAL INSTRUCTIONS
The Newswift antenna may be fitted with an optional feedarm end arrangement that allows
for a rapid swap over between bands. To change the feedarm end, follow the procedure
below:
Undo the LNB cable (Figure 10).
Pull down the motor cable from inside the feedarm and undo (Figure 11 and 12).
Undo the waveguide quick release flange at the end of the feedarm (Figure 13).
Lift up and rotate the two side feedarm fasteners to release the feedarm end arms (Figure 14
and 15).
Pull the feedarm end back and up to release the feedarm end from the feedarm.
Replacement is a reversal of fitting. When refitting the motor cable ensure that it is pushed
up into and held by the clip inside the feedarm (Figure 16).
VISLINK
Newswift 90-180 Motorised Antenna 14
4. DRIVE CONTROL UNIT
4.1 INTRODUCTION
The Drive Control Unit (DCU4000) is the controlling element of a Newswift Motorised
System. The unit is fitted in a compact waterproof housing mounted on the antenna. This is
connected to the stepper motors, motor rotation detectors, waveguide polarisation switch,
RF elevation inclinometer and antenna position monitors with cables running out of its front
panel via waterproof EMC cable glands.
The DCU4000 has a RS485 serial communication link using standard Advent protocol to a
controlling ACU (Antenna Control Unit) which gives the DCU simple commands. These
commands are then acted upon by the DCU.
The DCU4000 controls and monitors the sequence of events in any action such as
deploying or stowing the antenna. If a fault or possible failure is detected the system flags
the problem to the controlling ACU. When the antenna is deployed, the DCU monitors the
position of the antenna and limits the positional movement to within defined pre-
programmed limits.
4.2 SPECIFICATION
This section is for illustrative purposes only and does not form the basis for any contractual
obligation.
PHYSICAL
Dimensions 380 x 150 x 80 mm (excluding connectors).
Weight 3.0 kg approx.
Power 12V DC nominal. @2A max. (10 - 14 V DC.) 36 ± 2 V DC @5A
max.
Temperature Range -20 °C to +60 °C operating
-40 °C to +80 °C storage
Environmental Sealed to IP65, when case is in correct vertical orientation.
Angular Positional Resolution Error Repeatability
Azimuth ±0.1° ±0.2° ±0.1°
Elevation ±0.1° ±0.2° ±0.1°
Polarisation ±0.1° ±0.2° ±0.1°
Angular Position limits
Azimuth ±182°
Elevation +6° to +90°. (Nominal)
Polarisation ±46°, ±91° (no WG Switch),
Control Interface RS485, standard Advent packet protocol.
VISLINK
Newswift 90-180 Motorised Antenna 15
4.3 FRONT AND REAR PANEL
The above diagram shows the front panel layout of the DCU4000.
The AZIMUTH, ELEVATION and POLARISATION MOTOR DRIVE cables go to the stepper
motor, motor rotation detector and brake, if fitted, of the respective drive axis.
The INCLINOMETER cable goes to the RF elevation inclinometer fitted within the elevation
pivot axis cover. This is used to measure the true RF angle of the antenna system, and takes
into account any elevation offset caused by the antenna mount not being horizontal.
The W/G SWITCH cable drives and monitors the waveguide TX polarisation switch fitted
beside the feed horn. (If option fitted.)
The AZIMUTH, ELEVATION and POLARISATION SENSOR cables connect to the Hall
Effect magnetic position sensors for the three axis.
The TRANSMIT and STOW POSITION MICROSWITCH cables connect the two safety inhibit
micro-switches fitted to the elevation axis.
The DCU POWER and DCU COMMS cable run from the antenna to the controlling
ACU4XXX. These cables provide the power for the DCU electronics and motors, and the
serial communications with the ACU4XXX. The connections to the safety micro-switches are
also within the COMMS cable.
The ANTENNA HANDHELD CONTROLLER cable connects to a hand held controller that
enables direct control of each motor axis drive. (If option fitted.)
The manual brake override switch is used to release the brakes on the azimuth or elevation
axis. This allows the antenna to be moved manually.
Any unused cable glands should have a blanking grommet fitted.
This manual suits for next models
1
Table of contents
