Videotec ulisse2 User manual

EN
English - Instructions manual
IT
Italiano - Manuale di istruzioni
FR
Français - Manuel d’instructions
DE
Deutsch - Bedienungslanleitung
RU
 - Руководство по эксплуатации
ITALIANO
ULISSE2
Universal Full IP PTZ for IP cameras

EN
English - Instruction manual
ENGLISH
ULISSE2
Universal Full IP PTZ for IP cameras

Instruction manual - English - EN
3MNVCU2_1638_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..................................................................................................................... 8
4 Identication................................................................................................................ 10
4.1 Product description and type designation...................................................................................................10
4.2 Product Overview..................................................................................................................................................10
4.3 Product marking ....................................................................................................................................................11
4.3.1 Checking the markings .......................................................................................................................................................11
5 Versions ........................................................................................................................ 11
5.1 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 Attaching the bracket..........................................................................................................................................................13
6.5.2 Cables management ............................................................................................................................................................13
6.5.3 Pre-conguration of third party cameras .....................................................................................................................13
7 Assembly ...................................................................................................................... 14
7.1 Cameras features ...................................................................................................................................................14
7.2 Fixing the sunshield..............................................................................................................................................14
7.3 Assembling the camera and motorised lenses...........................................................................................14
7.3.1 How to open the housing...................................................................................................................................................14
7.3.2 How to install the camera...................................................................................................................................................15
7.4 Connection of the camera and motorised lens..........................................................................................17
7.4.1 Housing board description................................................................................................................................................17
7.4.2 Maximum nominal values of the camera and motorised lens..............................................................................18
7.4.3 Network camera connection.............................................................................................................................................18
7.4.4 Connecting the controlled motorised lenses when powered ..............................................................................19
7.4.4.1 Connecting the lenses with reverse polarity motors.....................................................................................................................19
7.4.4.2 Connecting lenses with common wiring motors............................................................................................................................19
7.4.4.3 Adjustment of the supply voltage of the lens motors ..................................................................................................................19
7.4.4.4 Connecting the potentiometers ...........................................................................................................................................................19
7.4.4.5 One Push Autofocus ..................................................................................................................................................................................20
7.4.5 Connecting the motorised lenses controlled via serial line...................................................................................20
7.4.6 Installation of the visible camera module (optional)................................................................................................20
7.4.7 Installation of the upper body of the housing with anti-icing heated glass and wiper (optional)..........21
7.4.8 Closing the housing..............................................................................................................................................................21
8 Installation ................................................................................................................... 21
8.1 Fixing the base to the support..........................................................................................................................21

EN - English - Instruction manual
4 MNVCU2_1638_EN
8.2 Connecting the Pan & Tilt to the system.......................................................................................................23
8.2.1 Connector board description............................................................................................................................................23
8.2.2 Connection of the power supply line.............................................................................................................................23
8.2.3 Signal cable connection......................................................................................................................................................24
8.2.3.1 Connection of the Ethernet cable.........................................................................................................................................................24
8.2.3.2 Connection of the alarm inputs, of the twilight switch and of the relays..............................................................................24
8.3 Selecting the unit operating mode.................................................................................................................25
8.3.1 Description of the Master Selection mode ..................................................................................................................25
8.3.2 Description of the Factory Default procedure............................................................................................................26
8.4 Closing the connector housing cover............................................................................................................26
8.5 Installing the memory card................................................................................................................................26
8.6 Fixing the upper body..........................................................................................................................................27
8.7 LED illuminators installation (optional features)........................................................................................27
8.7.1 Fitting the bracket.................................................................................................................................................................27
8.7.2 Fitting the illuminator on the bracket............................................................................................................................28
8.8 Connection of the LED illuminators................................................................................................................29
8.9 LED illuminator activation and adjustment instructions ........................................................................29
8.9.1 LED illuminator switching on threshold adjustment ...............................................................................................30
8.9.2 LED illuminator power adjustment.................................................................................................................................30
8.9.3 Activation of the LED illuminator via an external dusk switch..............................................................................31
8.9.4 Activation of the LED illuminator via the integrated dusk sensor.......................................................................31
8.9.5 Activation of the LED illuminators via the camera....................................................................................................31
8.9.6 Manually activate the LED illuminators.........................................................................................................................31
9 Switching on ................................................................................................................ 32
10 Conguration............................................................................................................. 32
10.1 Default IP address ...............................................................................................................................................32
10.2 Identication of the MAC address.................................................................................................................32
10.3 Web interface........................................................................................................................................................33
10.3.1 First access to the web pages.........................................................................................................................................33
10.3.2 Hardware Conguration Page........................................................................................................................................33
10.3.3 Home Page............................................................................................................................................................................36
10.3.3.1 Video Snapshot .........................................................................................................................................................................................36
10.3.3.2 System Status.............................................................................................................................................................................................36
10.3.3.3 Horizontal and vertical movement....................................................................................................................................................37
10.3.3.4 Lens control................................................................................................................................................................................................37
10.3.3.5 Wiper and wash system control..........................................................................................................................................................37
10.3.3.6 Day/Night mode control........................................................................................................................................................................37
10.3.3.7 Slave illuminator control........................................................................................................................................................................37
10.3.3.8 Preset management................................................................................................................................................................................38
10.3.3.9 Relay and alarm status control............................................................................................................................................................38
10.3.3.10 Device control using the keyboard.................................................................................................................................................38
10.3.4 Device Parameters Page...................................................................................................................................................39
10.3.5 Device Statistics Page........................................................................................................................................................39
10.3.6 Network Page.......................................................................................................................................................................39
10.3.7 Users Page..............................................................................................................................................................................40
10.3.8 Movements Page.................................................................................................................................................................40
10.3.9 Autopan Page.......................................................................................................................................................................41
10.3.10 Patrol Page..........................................................................................................................................................................41
10.3.11 Motions Recall Page.........................................................................................................................................................41

Instruction manual - English - EN
5MNVCU2_1638_EN
10.3.12 Preset Page..........................................................................................................................................................................42
10.3.13 Preset (Advanced) Page..................................................................................................................................................42
10.3.14 Digital Inputs Page...........................................................................................................................................................42
10.3.15 Digital Outputs Page.......................................................................................................................................................43
10.3.16 Auxiliary Commands Page ............................................................................................................................................43
10.3.17 Night Mode Page..............................................................................................................................................................44
10.3.18 Wash System Page............................................................................................................................................................45
10.3.19 Camera Setting Page.......................................................................................................................................................46
10.3.19.1 Third party camera ................................................................................................................................................................................46
10.3.19.2 Visible camera module.........................................................................................................................................................................46
10.3.20 Masking Page.....................................................................................................................................................................48
10.3.21 System Log Page...............................................................................................................................................................49
10.3.22 Tools Page............................................................................................................................................................................49
11 Accessories................................................................................................................. 50
11.1 Washer.....................................................................................................................................................................50
11.2 Mounting bracket for LED illuminators.......................................................................................................50
11.3 LED illuminators...................................................................................................................................................50
11.4 Wall mount bracket ............................................................................................................................................50
11.5 Parapet bracket....................................................................................................................................................50
11.6 Visible camera module......................................................................................................................................51
11.7 Anti-icing heated glass......................................................................................................................................51
12 Maintenance .............................................................................................................. 52
12.1 Fuses replacement..............................................................................................................................................52
13 Cleaning ..................................................................................................................... 52
13.1 Window and plastic cover cleaning..............................................................................................................52
13.2 Cleaning the germanium window................................................................................................................52
14 Disposal of waste materials...................................................................................... 52
15 Troubleshooting ........................................................................................................ 53
16 Technical data ............................................................................................................ 56
16.1 General....................................................................................................................................................................56
16.2 Mechanical.............................................................................................................................................................56
16.3 Housing's window...............................................................................................................................................57
16.4 Electrical .................................................................................................................................................................57
16.5 Network ..................................................................................................................................................................57
16.6 Camera....................................................................................................................................................................58
16.7 Environment..........................................................................................................................................................59
16.8 Certications.........................................................................................................................................................59
17 Technical drawings .................................................................................................... 60

EN - English - Instruction manual
6 MNVCU2_1638_EN

Instruction manual - English - EN
7MNVCU2_1638_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!
Mechanical hazard.
Risk of crushing or shearing.
DANGER!
Hot surface.
Avoid contact. Surfaces are hot and may
cause personal injury if touched.
DANGER!
Emission of visible light or infrared.
Can be harmful for eyes. Pay attention to
the provided indications.
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 quoted names of products or companies are
trademarks or registered trademarks.

EN - English - Instruction manual
8 MNVCU2_1638_EN
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).
Before starting any operation, make sure
the power supply is disconnected.
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).
CAUTION! Disconnect TNV circuit connector
before opening product.
• 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 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.

Instruction manual - English - EN
9MNVCU2_1638_EN
• 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 (4.3 Product marking, page
11).
• 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.
• The product is designed to house only cameras
that are properly certied.
• The maximum nominal value of the camera must
be 12Vdc, 18W max (57Vdc, 13W max for PoE
versions).
• A power disconnect device must be included in
the electrical system, 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.
• 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 external surge 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, 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, suitable rated for operating voltage
and designated as follows: Type 2 (Permanently
connected SPDs intended for installation on the
load side of the service equipment overcurrent
device); 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.
• The device must be properly connected to the
earth circuit.
• 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%).

EN - English - Instruction manual
10 MNVCU2_1638_EN
4 Identication
4.1 Product description and type
designation
ULISSE2 is an outdoor full IP PTZ unit for control
and management of all third-party IP cameras
and thermal imaging cameras (ONVIF-S or those
equipped with an RS485 serial port), with direct
access via a browser to the camera's interface for
setup and diagnostics.
Thanks to ONVIF-S protocols, the Full IP connectivity
of the ULISSE2 allows you to network-control P&T
plus all camera functions, including the wiper, washer
pump, pre-sets, illuminator activation and setup,
using the most popular VMS' on the market.
The advanced protection technology used has
allowed certain characteristics of the new PTZ to be
enhanced, such as the temperature range of -40°C
(-40°F) to +65°C (+149°F). The unit can be demisted
with forced air and the temperature is constantly
controlled, thus preventing condensation and
guaranteeing an ideal operating temperature range
for the camera.
The LED illuminators are easily integrated onto the
P&T, even post-installation, without the need for
additional power sources and independently of
the unit’s power supply. The second illuminator can
be turned on at certain zoom parameters, pre-set
positions or manually to avoid spotlighting a near-by
subject or to control a oodlight.
The PTZ is equipped with a wiper that, with the help
of the optional washer kit, always keeps the camera
window clean for perfect visibility in all weathers.
The ecient automatic self-test rapidly detects the
state of the system and all reported events are stored
in the internal log. A complete system backup is
possible via the Micro SD slot.
Improved accessibility to connections allows you
to carry out wiring and diagnostics quickly and
easily, without dismantling the product. ULISSE2
can be completely assembled using a single hex key
(supplied)
4.2 Product Overview
The product consists of 4 parts:
1. Upper part of the housing.
2. Third party camera and motorised lens (not
supplied)/Third party camera with integrated
lens (not supplied)/Visible camera module
(accessory).
3. Body.
4. Base.
01
02
03
04
Fig. 1

Instruction manual - English - EN
11MNVCU2_1638_EN
4.3 Product marking
Pan & tilt devices have a label complying
with CE markings.
Fig. 2
The label shows:
• Model identication code (Extended 3/9 bar code).
• Supply voltage (Volt).
• Frequency (Hertz).
• Current consumption (Amps).
• Weatherproof standard (IP).
• Serial number.
4.3.1 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.
5 Versions
5.1 Germanium window
The version with germanium window has been
developed for applications with thermal cameras.
Fig. 3

EN - English - Instruction manual
12 MNVCU2_1638_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.
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:
• Allen wrench
• Spacers
• Label
• Cable ties
• Silicone sheath
• Reduction gaskets for cable glands
• Instruction manual
• Bolts and screws
• 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
13MNVCU2_1638_EN
6.5 Preparatory work before
installation
6.5.1 Attaching the bracket
Dierent types of supports are available (11
Accessories, page50). 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.
For further information refer to the relative chapter (
8.2 Connecting the Pan & Tilt to the system, page23).
50cm50cm
Fig. 5
6.5.3 Pre-conguration of third party
cameras
The system can be interfaced to a VMS
(Video Management System) in two
dierent ways: (8.3.1 Description of the
Master Selection mode, page25). If you
want to use the PTZ Master mode, you must
congure the camera before installing it in
the housing.
The camera must be pre-congured to acquire an IP
address via DHCP.
The camera must be pre-congured to interface
with the NTP server via DHCP. If the NTP via DHCP
conguration of the camera is not possible, congure
the following static address of the NTP server:
192.0.0.1.
The camera must be pre-congured to communicate
with the Pan & Tilt via the ONVIF S Prole protocol.
Carefully choose your login and password as they will
be used to access the web conguration and pair the
device with the VMS.
The password can only contain the following
characters (a-z, A-Z, 0-9, ,._+@%/-()^*[]{}#;~).
Some cameras may not support the aforementioned
set of characters.
If the camera has an integrated lens, you need to
remove all the camera presets before installing on the
Pan & Tilt.

EN - English - Instruction manual
14 MNVCU2_1638_EN
7 Assembly
7.1 Cameras features
• 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:
1.5A.
7.2 Fixing the sunshield
Fix the sunshield to the housing using the screws and
washers screwed into the upper body of the housing.
Fig. 6
It is recommended to x the cover as far forward as
possible to protect against sun reection and water
droplets.
7.3 Assembling the camera and
motorised lenses
The customer has to take care of assembling the
camera and lenses.
7.3.1 How to open the housing
Loosen the 2 screws on the side, turn the cover and
the upper half of the body about the opening hinge
axis.
Fig. 7
DANGER!
Mechanical hazard.
Risk of crushing or shearing.

Instruction manual - English - EN
15MNVCU2_1638_EN
7.3.2 How to install the camera
The camera and lenses are to be installed inside the
housing using the appropriate slider (use the screws
and washers provided). The slider is composed of two
parts, the main slider (01) and the camera slider (02).
01
02
Fig. 8
Assemble the lens and the camera. If the lens is type
C and the camera is type CS, it is necessary to use a
spacer.
Fig. 9
Tighten the 1/4" camera screw partially so as to
allow the adjustment of the camera slider. The
camera slider can be mounted in dierent positions.
Depending on the camera slider position, use one of
the two slots to x the camera. For optimum hold use
the at and lock washers.
Fig. 10
Depending on the shape or size of the lens, it may
be necessary to use a spacer. Align the hole on the
spacer with the hole in the lens.
Fig. 11
Loosen the screws to remove the main slider from the
housing body.
Fig. 12
On the main slider, position the camera, the lens
and the slider of the previously assembled camera.
Partially tighten the 1/4" lens screw, so it can be
adjusted on the main slider. For optimum hold use
the at and lock washers.
Fig. 13

EN - English - Instruction manual
16 MNVCU2_1638_EN
Align the lens edge with the edge of the slider.
Fig. 14
Once the edges are aligned, without moving the
camera and lens unit, move the camera slider in line
with one of the 3 slots on the main slider.
Fig. 15
On reaching the optimum position, remove the main
slide (taking care not to lose the position) and fasten
in place using the 1/4" screw.
Fig. 16
Re-position the main slider on the camera/lens/slider
unit. Align the camera slider hole with the previously
selected main slider slot (01). Partially screw in the
camera slider screws (screws and washers supplied).
For optimum hold use the at and lock washers.
Tighten the 1/4" lens screw (02).
01
02
Fig. 17
Fully screw in the camera slider screws.
Fig. 18
Pay attention to the xing. Tightening
torque: 2.1Nm.

Instruction manual - English - EN
17MNVCU2_1638_EN
Place the camera in the housing and fasten in place
using the screws and washers.
Fig. 19
Pay attention to the xing. Tightening
torque: 2.1Nm.
7.4 Connection of the camera and
motorised lens
Before making the connections make sure
that the voltages supplied by the board fall
within the limits allowed for the apparatus.
The electronics board is designed to control cameras
with motorised lenses, which may or may not have
potentiometers to control the position reached.
7.4.1 Housing board description
BOARD DESCRIPTION
Compo-
nent
Function
J4 Not used
J5 RS-485 (lens)
J6 Reading the lens potentiometers
J7 Lens motor power supply, One Push AF
J8 Lens motor power supply, One Push AF, reading the
lens potentiometers
J9 Visible cut lter
J10 Power supply and control (integrated camera)
J11 Power supply and control (Slave illuminator)
J12 Card diagnostics
J13 RS-485 (camera)
J14 Camera power supply, camera input alarm, camera
output alarm
J15 Power supply and control (Master illuminator)
J16 Heated glass
J17 Wiper
J18 Ethernet
DIP2 Lens voltage
DIP3 Housing conguration
LD7 Internal power supply status (5V)
LD8 Internal power supply status (3,3V)
LD9 Firmware status
LD10 Camera power status
LD11 Internal power supply status (12V)
LD12 PoE power supply status
Tab. 1

EN - English - Instruction manual
18 MNVCU2_1638_EN
J4 J5LD7 J6 LD8 J7
LD9 J8 J9 LD10
DIP2
J10
LD11
J11
DIP3
J12
J13
J14
J15
J18LD12 J17 J16
Fig. 20
7.4.2 Maximum nominal values of the
camera and motorised lens
The maximum nominal values are shown in the
following table.
MAXIMUM NOMINAL VALUES OF THE CAMERA AND MOTORISED
LENS
Voltage Current Description
+12V 1500mA max Camera power
supply
+5V 15mA max Lens potentiometer
power supply
from 6Vdc to 15Vdc
(adjustable)
200mA max
(Focus+Zoom)
Lens motor power
supply
Tab. 2
7.4.3 Network camera connection
Connect the power supply, the data line and the
camera alarms (optional) as shown in the diagram. If
the Pan & Tilt is controlled in Camera Master mode,
connect the RS-485 control serial line (8.3 Selecting
the unit operating mode, page25).
J13
B
B
A
A
AL
COM
DN1
+12V
GND
DN2
J18
J14
OUTPUT
INPUT
+12VGND
Fig. 21
The LD10 LED ON indicates that the camera power
supply terminal has a voltage of 12Vdc.
The system detects the ambient temperature in
the switch on phase. The system does not allow the
camera to switch on until it reaches the minimum
operating temperature (cold start).
When the illuminators are switched on, the DN1 and
DN2 terminals are used to force the camera to work
in Night mode.
In Camera Master mode the AL and COM terminals
are used to transmit the camera alarm status to
the relay on the Pan & Tilt base (RL1A, RL1B, 8.2.3.2
Connection of the alarm inputs, of the twilight switch
and of the relays, page24).
Gather the excess cable to avoid it
interfering with the wiper operation (in the
versions in which they are available).