Videotec ULISSE MAXI NETCAM User manual

ENGLISH ITALIANO FRANÇAIS DEUTSCH
РУССКИЙ
EN
English - Instructions manual
IT
Italiano - Manuale di istruzioni
FR
Français - Manuel d’instructions
DE
Deutsch - Bedienungslanleitung
RU
 -   
ULISSE MAXI NETCAM
Full IP PTZ unit for network cameras for dynamic
monitoring of large outdoor areas

EN
English - Instruction manual
ENGLISH
ULISSE MAXI NETCAM
Full IP PTZ unit for network cameras for dynamic
monitoring of large outdoor areas

Instruction manual - English - EN
3MNVCUPTMAXIR_1625_EN
Contents
ENGLISH 1
1 About this manual ......................................................................................................... 7
1.1 Typographical conventions.................................................................................................................................. 7
2 Notes on copyright and information on trademarks.................................................. 7
3 Safety rules..................................................................................................................... 7
4 Identication................................................................................................................ 10
4.1 Product description and type designation...................................................................................................10
4.2 Product marking ....................................................................................................................................................10
4.2.1 Checking the markings .......................................................................................................................................................10
5 Versions ........................................................................................................................ 11
5.1 LED illuminators.....................................................................................................................................................11
5.2 Germanium window.............................................................................................................................................11
6 Preparing the product for use .................................................................................... 12
6.1 Safety precautions before use...........................................................................................................................12
6.2 Unpacking................................................................................................................................................................12
6.3 Contents....................................................................................................................................................................12
6.4 Safely disposing of packaging material.........................................................................................................12
6.5 Preparatory work before installation..............................................................................................................13
6.5.1 Mounting the bracket..........................................................................................................................................................13
6.5.2 Cables management ............................................................................................................................................................13
7 Assembly ...................................................................................................................... 14
7.1 Sunshield mounting.............................................................................................................................................14
7.2 Assembling the camera and motorised lenses...........................................................................................14
7.2.1 Cameras features ...................................................................................................................................................................14
7.2.1 How to open the housing...................................................................................................................................................15
7.2.2 Fastening the lens and the camera to the internal slide.........................................................................................15
7.2.3 Positioning of the H-20 spacer on the inner slide......................................................................................................16
7.2.4 Internal slide............................................................................................................................................................................16
7.3 Housing board description ................................................................................................................................17
7.3.1 Connection of the camera and motorised lens..........................................................................................................17
7.3.2 Adjustment of the supply voltage of the lens motors .............................................................................................18
7.3.3 Connection of the communication line ........................................................................................................................18
8 Installation ................................................................................................................... 19
8.1 Connection of the cables to the base.............................................................................................................19
8.2 Fixing the base to the support..........................................................................................................................20
8.3 Connector board description............................................................................................................................20
8.4 Connection of the power supply line.............................................................................................................21
8.4.1 24Vac power line connection............................................................................................................................................22
8.4.2 120Vac and 230Vac power line connection.................................................................................................................22
8.4.3 Connection of the alarm inputs, of the twilight switch and of the relays.........................................................23
8.5 Connection of the Ethernet cable....................................................................................................................23
8.6 Fixing the upper body..........................................................................................................................................24

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4 MNVCUPTMAXIR_1625_EN
8.7 Counterweights installation ..............................................................................................................................24
8.8 LED illuminators installation..............................................................................................................................25
8.8.1 Counterweight removal......................................................................................................................................................25
8.8.2 Fitting the illuminator on the bracket............................................................................................................................25
8.9 Connection of the LED illuminators................................................................................................................26
8.10 Desiccant bag.......................................................................................................................................................27
8.11 LED illuminator activation and adjustment instructions......................................................................27
8.11.1 Description of the LED illuminator ...............................................................................................................................27
8.11.2 Activation of the LED illuminator via an external dusk switch...........................................................................28
8.11.3 Activation of the LED illuminator via the integrated dusk sensor.....................................................................28
8.11.4 Manually activate the LED illuminators ......................................................................................................................28
8.11.5 LED illuminator switching on threshold adjustment.............................................................................................29
8.11.6 LED illuminator power adjustment ..............................................................................................................................29
8.12 Fastening of the wiper blade ..........................................................................................................................30
8.13 Hardware conguration....................................................................................................................................31
8.13.1 Opening the conguration door...................................................................................................................................31
8.13.2 DIP1 conguration..............................................................................................................................................................31
8.13.3 DIP2 conguration..............................................................................................................................................................31
8.13.4 DIP3 conguration..............................................................................................................................................................32
8.13.4.1 Address conguration............................................................................................................................................................................32
8.13.4.2 Setting of the serial communication lines ......................................................................................................................................32
8.13.5 DIP4 conguration..............................................................................................................................................................32
9 Switching on ................................................................................................................ 33
10 Conguration............................................................................................................. 34
10.1 Web interface........................................................................................................................................................34
10.1.1 Products equipped with rmware version prior to 2.1 .........................................................................................34
10.1.2 First access to the web pages.........................................................................................................................................35
10.1.3 Home Page............................................................................................................................................................................35
10.1.4 User Controls page.............................................................................................................................................................36
10.1.5 Device Parameters Page...................................................................................................................................................37
10.1.6 Device Statistics page........................................................................................................................................................37
10.1.7 Network Conguration page..........................................................................................................................................37
10.1.8 User Conguration page..................................................................................................................................................38
10.1.9 Movement Parameters page...........................................................................................................................................38
10.1.9.1 Autopan Page............................................................................................................................................................................................39
10.1.9.2 Patrol Page..................................................................................................................................................................................................39
10.1.9.3 Motions Recall Page................................................................................................................................................................................39
10.1.10 Preset Parameters page..................................................................................................................................................39
10.1.11 Preset Parameters page (Advanced)..........................................................................................................................39
10.1.12 Digital I/O Page..................................................................................................................................................................40
10.1.13 Washer page.......................................................................................................................................................................40
10.1.14 Camera Settings page.....................................................................................................................................................41
10.1.15 Tools Page............................................................................................................................................................................41
10.1.16 Factory Default ..................................................................................................................................................................42
10.2 VTTunnel ................................................................................................................................................................42
11 Accessories................................................................................................................. 43
11.1 Washer.....................................................................................................................................................................43
11.1.1 Washing system connection...........................................................................................................................................43

Instruction manual - English - EN
5MNVCUPTMAXIR_1625_EN
11.2 Wall mount bracket ............................................................................................................................................44
11.3 Parapet bracket....................................................................................................................................................44
11.4 Power supply with illuminator control........................................................................................................44
12 Instructions for exceptional operation.................................................................... 45
12.1 How to switch from ONVIF communication mode to RS-485 (telemetry) mode ........................45
12.1.1 Analogue Video connection............................................................................................................................................46
12.1.2 Camera connection............................................................................................................................................................46
12.1.3 Check communication in RS485 mode.......................................................................................................................49
12.1.4 Alarm status control...........................................................................................................................................................49
12.1.5 Reset the ONVIF mode......................................................................................................................................................50
12.1.6 Communication control in ONVIF mode....................................................................................................................50
13 Maintenance .............................................................................................................. 51
13.1 Fuses replacement..............................................................................................................................................51
14 Cleaning ..................................................................................................................... 51
14.1 Window and plastic cover cleaning..............................................................................................................51
14.2 Cleaning the germanium window................................................................................................................51
15 Disposal of waste materials...................................................................................... 51
16 Troubleshooting ........................................................................................................ 52
17 Technical data ............................................................................................................ 53
17.1 General....................................................................................................................................................................53
17.2 Mechanical.............................................................................................................................................................53
17.3 Housing's window...............................................................................................................................................53
17.4 Electrical .................................................................................................................................................................54
17.5 Communications.................................................................................................................................................54
17.6 Protocols.................................................................................................................................................................54
17.7 Environment..........................................................................................................................................................54
17.8 Certications.........................................................................................................................................................54
18 Technical drawings .................................................................................................... 55
A Appendix - Address table ........................................................................................... 58

EN - English - Instruction manual
6 MNVCUPTMAXIR_1625_EN

Instruction manual - English - EN
7MNVCUPTMAXIR_1625_EN
1 About this manual
Read all the documentation supplied carefully before
installing and using this unit. Keep the manual in a
convenient place for future reference.
1.1 Typographical conventions
DANGER!
High level hazard.
Risk of electric shock. Disconnect the
power supply before proceeding with any
operation, unless indicated otherwise.
DANGER!
Hot surface.
Avoid contact. Surfaces are hot and may
cause personal injury if touched.
DANGER!
Mechanical hazard.
Risk of crushing or shearing.
CAUTION!
Medium level hazard.
This operation is very important for the
system to function properly. Please read
the procedure described very carefully and
carry it out as instructed.
INFO
Description of system specications.
We recommend reading this part carefully
in order to understand the subsequent
stages.
2 Notes on copyright and
information on trademarks
The mentioned names of products or companies are
trademarks or registered trademarks.
3 Safety rules
CAUTION! The electrical system to which
the unit is connected must be equipped
with a 20A max automatic bipolar circuit
breaker. This circuit breaker must be of
the Listed type. The minimum distance
between the circuit breaker contacts must
be 3mm (0.1in). The circuit breaker must be
provided with protection against the fault
current towards the ground (dierential)
and the overcurrent (magnetothermal).
CAUTION! Hazardous moving parts. Keep
ngers and other body parts away.
CAUTION! Device installation and
maintaining must be performed by
specialist technical sta only.
CAUTION! For continued protection against
risk of re, replace only with same type and
rating of fuse. Fuses must be replaced only
by service personnel.
CAUTION! TNV-1 installation type. The
installation is type TNV-1, do not connect it
to SELV circuits.
CAUTION! In order to reduce the risk of re,
only use UL Listed or CSA certied cables
with sections greater than or equal to
0.14mm² (26AWG).
• The manufacturer declines all responsibility
for any damage caused by an improper use
of the appliances mentioned in this manual.
Furthermore, the manufacturer reserves the right
to modify its contents without any prior notice.
The documentation contained in this manual has
been collected and veried with great care. The
manufacturer, however, cannot take any liability
for its use. The same thing can be said for any
person or company involved in the creation and
production of this manual.

EN - English - Instruction manual
8 MNVCUPTMAXIR_1625_EN
• Before starting any operation, make sure the
power supply is disconnected.
• Be careful not to use cables that seem worn or old.
• Never, under any circumstances, make any
changes or connections that are not shown in
this handbook. Improper use of the appliance
can cause serious hazards, risking the safety of
personnel and of the installation.
• Use only original spare parts. Non-original spare
parts could cause re, electrical discharge or other
hazards.
• Before proceeding with installation, check the
supplied material to make sure it corresponds
to the order specication by examining the
identication labels (4.2 Product marking, page
10).
• Installation category (also called Overvoltage
Category) species the level of mains voltage
surges that the equipment will be subjected to.
The category depends upon the location of the
equipment, and on any surge voltage protection
provided. Equipment in an industrial environment,
directly connected to major feeders/short branch
circuits, is subjected to Installation Category
III. If this is the case, a reduction to Installation
Category II is required. This can be achieved by
use of an insulating transformer with an earthed
screen between primary and secondary windings,
or by tting UL listed Surge Protective Devices
(SPDs) from live to neutral and from neutral to
earth. Listed SPDs shall be designed for repeated
limiting of transient voltage surges and the
following rated operation conditions: Type 2 (SPDs
permanently connected to the power network and
intended for installation on the load side of the
service equipment); Nominal Discharge Current
(In) 20kA min. For example: FERRAZ SHAWMUT,
STT2240SPG-CN, STT2BL240SPG-CN rated
120Vac/240Vac, (In=20kA). Maximum distance
between installation and reduction is 5m.
• This device was designed to be permanently
secured and connected on a building or on a
suitable structure. The device must be permanently
secured and connected before any operation.
• A power disconnect device must be included
in the electrical installation, and it must be very
quickly recognizable and operated if needed.
• The separate protective earthing terminal provided
on this product shall be permanently connected
to earth.
• Connect the device to a power source
corresponding to the indications given on the
marking label. Before proceeding with installation
make sure that the power line is properly isolated.
The supply voltage should never exceed the limit
(±10%).
• Power supply must be provided with a SELV type,
24Vac, 8A isolated source derived from a double
isolation UL Listed transformer specially protected
in output.
• The appliance includes moving parts. Make sure
that the unit is positioned where it is inaccessible
under normal operating conditions.
• Attach the Dangerous Moving Parts label near the
device. (Fig. 4, page12).
• Do not use the appliance in the presence of
inammable substances.
• To connect the power supply line use the
appropriate junction-box (UPTJBUL). For further
information, refer to the product use and
installation manual.

Instruction manual - English - EN
9MNVCUPTMAXIR_1625_EN
• Do not allow children or unauthorised people to
use the appliance.
• Only skilled personnel should carry out
maintenance on the device. When carrying out
maintenance, the operator is exposed to the risk of
electrocution and other hazards.
• Use only the accessories indicated by the
manufacturer. Any change that is not expressly
approved by the manufacturer will invalidate the
guarantee.
• Before connecting all the cables make sure the
device is properly connected to the earth circuit.
• If the device has to be removed from the
installation, always disconnect the earth cable last.
• Take all necessary precautions to prevent the
apparatus from being damaged by electrostatic
discharge.
• The unit has been made for connection using a
3-pole cable. To make a correct connection to
the earth circuit, follow the instructions in this
handbook.
• Handle the unit with great care, high mechanical
stress could damage it.
• Make especially sure that the power supply line is
insulated at a sucient distance from all the other
cables, including lightning protection devices.
• If it is necessary to transport the device, this should
be done with great care. Abrupt stops, bumps and
violent impact could damage the unit or injure the
user.

EN - English - Instruction manual
10 MNVCUPTMAXIR_1625_EN
4 Identication
4.1 Product description and type
designation
ULISSE MAXI NETCAM is a powerful Full-IP PTZ for
outdoor IP video surveillance, which can manage
modern IP SD, HD and Megapixel cameras, with
integration in a network system.
This model can house and manage the largest
motorised lenses on the market, taking a total weight
of up to almost 8 kilos.
This way a single unit can provide a 360° coverage of
the area to be monitored.
A special feature of ULISSE MAXI NETCAM is the
ability to easily control, via the network, all the
camera's pan & tilt functions, including wiper, preset
and set-up, using the most common VMS on the
market.
It is possible to use any ONVIF compatible Prole S
camera, or proprietary protocol on RS-485, whilst the
entire management of the system only requires an IP
address.
The Videotec's PTZ ASSISTANT plug-in software
supports any VMS with the control of all special
functions such as wiper, washer pump and IR.
The unit is equipped with a wiper for removing
rain and dust from the front glass; there is a wide
selection of jerry cans with washer pump, dierent
capacities and heads.
To ensure detailed images even during the night
hours, versions are available with LED illuminators,
with infrared light or white light.
The sturdy mechanical structure and the powerful
motors of this PTZ are designed to guarantee
maximum resistance to high operating stress,
vibrations and temperatures between -10°C to +60°C.
The unit is equipped with optical sensors which
ensure the accurate control of the position in any
condition of use.
Models are available for vision with a thermal camera.
4.2 Product marking
Pan & tilt devices have a label complying
with CE markings.
Fig. 1
The label shows:
• Model identication code (Extended 3/9 bar code).
• Supply voltage (Volt).
• Frequency (Hertz).
• Current consumption (Amps).
• Protection degree (IP).
• Serial number.
4.2.1 Checking the markings
Before proceeding further with installation, make
sure the material supplied corresponds to the order
specication by examining the marking labels.
Never, under any circumstances, make any changes
or connections that are not shown in this handbook.
Improper use of the appliance can cause serious
hazards, risking the safety of personnel and of the
installation.

Instruction manual - English - EN
11MNVCUPTMAXIR_1625_EN
5 Versions
5.1 LED illuminators
The version with LED illuminators can only
powered at 24Vac.
The pan & tilt can be tted with bracket for 2
VIDEOTEC LED illuminators for night surveillance
(illuminators not included).
Fig. 2
For further information refer to the relative
chapter (8.8 LED illuminators installation,
page25).
5.2 Germanium window
The version with germanium window has been
developed for applications with thermal cameras.
Fig. 3

EN - English - Instruction manual
12 MNVCUPTMAXIR_1625_EN
6 Preparing the product for
use
Any change that is not expressly approved
by the manufacturer will invalidate the
guarantee.
The unit must not be dismantled or
tampered with. The only exceptions
are those concerning the assembly and
maintenance operations stipulated in this
manual.
6.1 Safety precautions before use
The appliance includes moving parts. Make
sure that the unit is positioned where it
is inaccessible under normal operating
conditions. Attach the warning label
supplied with the appliance, placing it near
the unit so that it can be seen easily.
Fig. 4
6.2 Unpacking
When the product is delivered, make sure that the
package is intact and that there are no signs that it
has been dropped or scratched.
If there are obvious signs of damage, contact the
supplier immediately.
When returning a faulty product we recommend
using the original packaging for shipping.
Keep the packaging in case you need to send the
product for repairs.
Unpack the sunshield of the device, taking
care not to damage the housing.
6.3 Contents
Check the contents to make sure they correspond
with the list of materials as below:
• Positioning unit
• Power supply base
• Accessories package:
• Serial adaptor
• Serial extension cable
• Allen wrenches
• Spacers
• Spacers (not available in the version with
integrated camera)
• Label
• Cable ties
• Silicone sheath
• Reduction gaskets for cable glands
• Instruction manual
• Attachment plate for desiccant bag
• Desiccant bag
• Bolts and screws
• Counterweights package:
• Bracket for attachment of LED illuminators
(available in the versions with LED illuminators)
• Counterweights
• Counterweights brackets
• Sunshield
6.4 Safely disposing of packaging
material
The packaging material can all be recycled. The
installer technician will be responsible for separating
the material for disposal, and in any case for
compliance with the legislation in force where the
device is to be used.

Instruction manual - English - EN
13MNVCUPTMAXIR_1625_EN
6.5 Preparatory work before
installation
6.5.1 Mounting the bracket
For installations subject to vibrations, only
use the parapet bracket.
Dierent types of supports are available (11
Accessories, page43). Choose a suitable bracket for
the installation and follow all the instructions in the
suggested chapter.
Take special care when attaching and
fastening down the apparatus. The
clamping system must be able to support
at least 4 times the weight of the entire
equipment, including P&T, lenses and
camera.
The device should be assembled vertically.
Any other position could impair the
performance of the appliance.
Do not attach the device upside down.
6.5.2 Cables management
The connection cables should not be
accessible from the outside. It is necessary
to fasten the cables securely to the support
in order to prevent excessive weight pulling
them out accidentaly.
You must use cables suited to the type of
installation.
Insert the cables into the support so that they
protrude by about 50cm.
50cm50cm
Fig. 5

EN - English - Instruction manual
14 MNVCUPTMAXIR_1625_EN
7 Assembly
Only network cameras with specic
technical characteristics can be installed (
7.2.1 Cameras features, page14).
7.1 Sunshield mounting
Mount the sunshield to the housing with the 4 screws
and 4 washers couples provided.
Fig. 6
7.2 Assembling the camera and
motorised lenses
The correct operation of the equipment,
within the temperature range indicated, is
guaranteed only if you use camera and lens
with temperature limits equal to at least
-10°C and +60°C.
The customer has to take care of assembling the
camera and lenses.
7.2.1 Cameras features
The correct operation of the equipment,
within the temperature range indicated, is
guaranteed only if you use camera and lens
with temperature limits equal to at least
-10°C and +60°C.
The camera must be pre-congured in
order to acquire the IP address via DHCP.
The camera must be pre-congured in
order to interface with the NTP server via
DHCP. If NTP conguration via DHCP is not
possible, set the following static address of
the NTP server: 192.0.0.1.
Only network cameras can be installed in
the unit.
• Only cameras with a 100 baseTx type Ethernet
communication port can be mounted.
• Only cameras powered by a terminal can be
mounted. The Pan & Tilt cannot supply power
directly on the Ethernet cable (Power over
Ethernet).
• The power supply voltage of the camera must be
12Vdc.
• The maximum current absorbed by the camera
must be lower than the value indicated below:
800mA.
• The communication protocol must be ONVIF,
S prole, protocol. The camera must be pre-
congured in order to communicate via the ONVIF,
S prole, protocol.
• The camera must be operate properly between
-10°C (14°F) and +60°C (140°F).

Instruction manual - English - EN
15MNVCUPTMAXIR_1625_EN
7.2.1 How to open the housing
Loosen the leak-proof screws placed on the sides and
lift the upper part of the housing.
Fig. 7
After installation and wiring, close the
product again.
7.2.2 Fastening the lens and the camera
to the internal slide
It is necessary to insulate the camera
body from the attachment slide in order
to prevent interference with the Ethernet
signal.
Maximum overall weight allowed for
camera and lens must not exceed 7.6kg
(16.8lb).
Connect the camera (02) to the lens (01).
Fasten the L-shaped small aluminium bracket (03) to
the camera by means of the nylon washer (04) and
the 1/4" screw (05).
01 02
03
04
05
Fig. 8
Position the lens on the slide (02) interposing the
plastic spacer (01). Fasten the whole assembly by
means of the nylon washer (03)and the 1/4" screw
(04).
If necessary, use the additional spacers to correctly
position the camera and lens.
01
02
03
04
Fig. 9
Fasten the aluminium plate (01) on the slide by
means of the screws and relative washers (02).
02
01
Fig. 10
Fix the L-bracket with the screw.
Fig. 11

EN - English - Instruction manual
16 MNVCUPTMAXIR_1625_EN
7.2.3 Positioning of the H-20 spacer on
the inner slide
It is possible to fasten the H-20 spacer (02) to the lens.
Connect the camera and fasten the L-shaped bracket
(Fig. 8, page15). Interpose a plastic spacer (01) of the
required thicknessand x it by means of washer and
screw (03).
01
02
03
Fig. 12
Position the lens with the spacer on the inner slide
(01) and fasten the spacer by means of the washers
and screws (02) provided as standard.
01
02
Fig. 13
Finish the installation as shown in the images (Fig. 10,
page15 e Fig. 11, page15).
7.2.4 Internal slide
Shift the inner slide with lens and camera already
fastened into the wanted position and secure it by
means of the washers and screws provided.
Fig. 14

Instruction manual - English - EN
17MNVCUPTMAXIR_1625_EN
7.3 Housing board description
BOARD DESCRIPTION
Connector/Terminal Function
CN1 Not used
CN2 Motorised lens motor control
connector
CN3 Motorised lens potentiometer
connector
CN6 Not used
CN7 Camera power supply, additional lines
DIP1 Select the lens power supply voltage
Tab. 1
CN6
CN3
CN2
CN1 CN7
DIP1
Fig. 15
7.3.1 Connection of the camera and
motorised lens
All connections illustrated below should
be made only and exclusively by expert
installers who should comply with all the
wiring and power supply specications for
the devices.
The electronics board is designed to control cameras
with motorised lenses, which may or may not have
potentiometers to control the position reached.
Before making the connections make sure
that the voltages supplied by the board fall
within the limits allowed for the apparatus.
CONNECTOR FOR CAMERA/MOTORISED LENSES
Voltage Current Description
+12V 800mA max Camera power
supply
+5V 15mA max Lens potentiometer
power supply
From 6Vdc up to
15Vdc (adjustable)
200mA max (Focus
+ Zoom + Iris)
Lens motor power
supply
Tab. 2
To power the camera perform the connections as
shown in gure.
F1
F2
A
B
+12V
GND
+12V GND
Fig. 16 CN7.

EN - English - Instruction manual
18 MNVCUPTMAXIR_1625_EN
Lenses with reverse polarity motors: Implement
the connections, as shown in the gure..
FOCUS +
FOCUS -
IRIS +
IRIS -
ZOOM +
ZOOM -
+
M
+
M
+
M
CN2
Fig. 17 CN2.
Lenses with common wire motors: Enable the
relative menu option (10.1.14 Camera Settings page,
page41). Implement the connections, as shown in
the gure..
FOCUS +
FOCUS -
IRIS +
IRIS -
ZOOM +
ZOOM -
+
M
+
M
+
M
CN2
Fig. 18 CN2.
Potentiometers: Implement the connections, as
shown in the gure..
+ POT
FOCUS
IRIS
ZOOM
- POT
GND
CN3
IRIS
ZOOM
FOCUS
Fig. 19 CN3.
7.3.2 Adjustment of the supply voltage
of the lens motors
Before powering the Pan & Tilt, select the lens power
voltage using DIP1 (7.3 Housing board description,
page17).
ADJUSTMENT OF THE SUPPLY VOLTAGE OF THE LENS MOTORS
SW1 SW2 Voltage
OFF OFF 15Vdc
ON OFF 12Vdc
OFF ON 9Vdc
ON ON 6Vdc
Tab. 3
7.3.3 Connection of the communication
line
Connect the Ethernet cable to the camera.
Fig. 20
Gather the excess cable to avoid it
interfering with the wiper operation (in the
versions in which they are available).