CV-940 Series
Biometric Fingerprint Reader
Installation Instructions
CV-940 Series
Contents
1. Description .................................................................................................................................................................. 03
2. Specifications ............................................................................................................................................................. 03
3. Mounting .................................................................................................................................................................... 04
4. Wiring ......................................................................................................................................................................... 04
5. Connecting Biometric Reader to CV-350 Controller ..................................................................................................... 04
5.1 Connecting Biometric Readers in Same RS485 Line with the CV-350 Controllers ........................................................... 05
5.2 Connecting Biometric Readers When All the Controllers Have TCP/IP Communication ..................................................... 05
6. Connecting Biometric Readers to 3rd Party Controller ................................................................................................ 06
7. Enrollment .................................................................................................................................................................. 06
8. Configuring the Biometric readers in Software ........................................................................................................... 07
8.1 Adding Biometric Reader ........................................................................................................................................... 07
8.2 Enrolling Fingerprints from a Reader ...........................................................................................................................
8.3 Enrolling Fingerprints from Desktop Reader ................................................................................................................. 09
8.4 Deleting Fingerprints .................................................................................................................................................. 10
8.5 Uploading the Fingerprints to the Biometric Readers .................................................................................................... 10
8.6 Firmware Update ....................................................................................................................................................... 11
8.7 Sensor Calibration ..................................................................................................................................................... 11
8.8 Send Configuration .................................................................................................................................................... 11
8.9 Advanced Settings .................................................................................................................................................... 12
9. Configuring the Biometric Readers in CBMS ............................................................................................................... 12
9.1 Add Reader .............................................................................................................................................................. 12
9.2 Edit Reader .............................................................................................................................................................. 13
9.3 Delete Reader .......................................................................................................................................................... 13
9.4 Calibrate Sensor ....................................................................................................................................................... 14
9.5 Enrolling Fingerprints from a Reader .......................................................................................................................... 14
9.6 Enrolling Fingerprints from Desktop Reader ................................................................................................................. 15
9.7 Deleting Fingerprints .................................................................................................................................................. 16
9.8 Uploading the Fingerprints to the Biometric Readers .................................................................................................... 16
9.9 Custom Wiegand ...................................................................................................................................................... 17
10. Wiegand Protocol Description .................................................................................................................................. 18
11. Safety Precautions ................................................................................................................................................... 18
12. Troubleshooting ........................................................................................................................................................ 19
08
1. Description
CV-940 is a Wiegand biometric reader for indoors access
control applications. It offers storage of up to 9500
ngerprints and a programmable Wiegand Output
(8 to 128 bits).
Conguration of the readers and ngerprint enrollment
is done through PC Software. Connection between the
biometric readers is RS485 and it is used for ngerprint
transfer and conguration. When used with third party
controllers, the connection between the Biometric readers
and the PC is done through a RS485 converter. Only one
converter is needed per system (one converter for 1, 2,
3...30, 31 Biometric readers.
The tamper switch output can trigger the alarm system, if an
attempt is made to open or remove the unit from the wall.
CV-940 Series
2”
(51mm)
3 5/8”
(92mm)
2. Specifications
Fingerprint capacity
Technology
Authentication
Fingerprints per user
Interface
Protocol programming
Cable distance
Fingerprint Sensor Type
1:1000 identification time
Fingerprint enrolment
Panel Connection
Green and Red LED
Orange LED
Buzzer
Backlight ON/OFF
Tamper
Consumption
IP Rating
Power supply
Operating Temperature
Dimensions
Housing
Color
1”
up to 9500 fingerprints
Biometry
Finger
1-10 fingerprints
Wiegand 8 to 128 bits; Default: Wiegand 26bit
By CAMS software (CV-350 system) and CBMS (all access control systems)
164 ft. (50m)
Capacitive
970 msec, including feature extraction time
On the reader or from the USB desktop reader (CV-350ER)
Cable, 3 ft. (1m)
Externally Controlled
Idle mode
Yes
Yes, by software settings
Yes
100mA
65
12V DC
5°F to +122°F (-15°C to 50°C)
3 5/8" W x 2" H x1" D (92mm x 51mm x 25mm)
Moulded Aluminium
Silver, Red, Charcoal, White
Page 3 of 19
3. Mounting
4. Wiring
CV-940 Series
+12V
gnd
d0
d1
xx
xx
xx
xx
+
1
2
V
g
n
d
d
0
d
1
x
x
x
x
x
x
x
x
Red
Black
Pink
Violet
Orange
Green
White
Yellow
Gray
Blue
12V DC
GND
A
RS485
B
LED Red -
LED Green D0
WIEGAND
D1
Tamper
Tamper
12V DC
GND
A
B
LR-
LG-
D1
D0
Tamper
Tamper
5. Connecting Biometric Readers to CV-350 Controller
• The Biometric readers can be connected to virtually
any controller that conforms to Wiegand format
standards (standard Wiegand 26bit or self-dened
Wiegand).
• The lines D0 and D1 are the Wiegand lines and the
Wiegand Number is sent through them.
• The RS485 line (A, B) is used for ngerprint transfer
and reader settings.
• The Biometric readers must be powered from
the controller.
• If you use a different power supply for the biometric
reader, connect the GND from the both devices to
ensure correct transfer of the wiegand signal.
• When you have connected the reader and powere is on,
the LED should ash an orange light + 2 beeps. This
lets you know it’s on and ready for use.
• Fingerprint enrollment is done from the PC Software.
Connection between the Biometric readers and the PC
must be established.
12V DC
Ground
RS485 A
RS485 B
Red LED -
Green LED -
Data 1
Data 0
Tamper Switch(NO)
Tamper Switch(NO)
164 ft. (50m) max.
12V
+
-
+
-
Pb1
gnd gnd
Pb2
Ds2Ds1
pink
violet
green
orange
black
red
white
yellow
Page 4 of 19
C40
IC15
TAS1
C5
R53
R15
C3
C34
R49
L3
R25
R24
A
BAT
C42
IC11
R17
R38
R34
Ser No: 11-04-16-013
X3
Mac: 00-04-A3-16-90-D
IC5
L10
L11
R10
ZD5
ZD6
Free Led 1
GND
R46
IC6
C18
AAA
LD14
gnd
BA
H1
R62
FUSE2
12Vdc Out
R7
IN1
Free In 1 +
In1
IC12
Free In 1 -
In2
IC2
Free In 2 +
In2
Free In 2 -
R6
R50
R54
Exit Button1
U1
GND
Exit Button2
LD21
Door Sensor1
R22
R18
GND
A
LD20
A
Door Sensor2
TCP/IP
U4
A
B
LGLR-
GND
+12V
D0
D1
R9
LD17
C4
led2led1
Rx
IC1
X1
R16
C6
C33
ZD4
Free Led 2
R55
R14
LD16
ZD3
LD22
A
A
A
LD18
LD19
A
LD23
R5
System
Busy
Tx
OK
IC1
RoHS
C2
C1
R11
R37
U5
R20
R19
L8
C32
FUSE1
12V out
Free Led 1
R47
GND
R45
IC8
R3
D0
D1
R4
A
LD15
LD13
C29
L9
gnd
D1D012V
R28
C41
C44
C43
ZD1
R13
led2led1
IC3
L6
Free Led 2
GND
R1
R2
ZD2
L7
gnd
Rb6
C45
R23
R21
D10
R48
D5
12V out
R36
RX4
RX3
L4
C15
ICN1
C13
C12
D2
C16
L5
D3
C27
L2
ICN2
IC7
D1
D0
D13
C28
gnd
12V
D1D012V
J1
A
RE4RE2
LD9
A
LD8
R33 R35
A
LD6
R32
A
LD5
Free Out 1 Free Out 2
Door 1 Door 2
Earth
COM
NC3NO3 NC4NO4
COM
COM
NC1NO1 NC2NO2
COM
RE1 RE3
Earth
screw
Fuse
CV-940 Series
5.1 Connecting Biometric Readers In Same RS485 Line with the CV-350 Controllers
Jumper for
RS485 termination
TCP/IP
50 ohm
gnd
Stub
16 ft.
(5m) max.
• The Biometric readers are connected through a RS485
bus. The same RS485 bus that the CV-350 controllers
are connected to.
• Maximum units in one network (CV-350 + Biometric
readers) is 32.
• If there are more than 32 units in one network, please
utilize a RS485 HUB to connect.
• The RS485 Line should be congured in the form of a
daisy chain, NOT in a form of a star. If a star must be
used in some points, keep the stubs from the RS485
backbone as short as possible. Maximum length of
the stub is dependant of the installation (total number
3,280 ft. (1 km) max. / 32 Units
(CV-350 + Biometric Readers)
RS485
gnd
termination, cable type...) so recommendation is to
keep stubs shorter than 16 1/2 meters, keeping
in mind that this can cause errors in communication
with PC software
• The cable must be twisted and shielded with a
min 0.01” in (0.2 mm) 2 cross section.
• Connect the ground (0V) of each unit in the RS485
Line using a third wire in the same cable.
• The shield of the communication cable between two
devices must be connected to the EARTH from ONE
side of the RS485 Line. Use the side that has earth
connection to the building’s grounding network.
of devices in RS485 line (total cable length,
5.2 Connecting Biometric Readers When All The Controllers Have
TCP/IP Communication
50 ohm
TCP/IP
Switch
164 ft.
(50m)
max.
• When all the controllers are connected via TCP/IP, then
the RS485 network becomes local (from Reader 1 to
the Controller then to the Reader 2).
• Connect the readers directly to the RS485 terminals in
each controller.
164 ft.
(50m)
max.
164 ft.
(50m)
max.
• If the distance Reader-Controller is high 164’ (50meters)
and if the communication with the reader can not be
established, then terminate the RS485 network by
closing the jumper in the CV-350 Controller or as
described in chapter 4.
Page 5 of 19
6. Connecting Biometric Readers To Third Party Controllers
CV-940 Series
3rd party controller
- + D0 D1
- + D0 D1
RS485 A
RS485 B
3rd party controller
- + D0 D1 - + D0 D1
• Connect the lines D0, D1, Gnd and +12V to the third
party controller.
• Connect the RS485 Line (A, B) to the converter.
Connect the converter in the PC.
• Fingerprint enrollment is done from the PC Software.
Connection between the Biometric readers and the PC
must be established.
CV-940-SER
A
B
CV-940-USB
CBMS Software
CV-940-TCP
CV-350ER
USB Desktop Reader
optional
• The Biometric readers communicate with each other
with a RS485 and with the PC Software through
a Converter.
• The RS485 Line should be congured in the form of
a daisy chain, NOT in a form of a star. Keep the stubs
from the RS485 backbone as short as possible (not
more than 16 ft. (5 meters).
• Only one converter per installation is needed,
not per reader.
7. Enrollment
Page 6 of 19
8. Configuring the Biometric Readers in CAMS Software
CV-940 Series
8.1 Adding a Biometric Reader
1.
Expand the Door item to view the readers
2. Right click on the reader and select properties (8.1)
3. In the Basic tab, for “Type” of Reader select
“CV-940”. (8.2)
4. After selecting the type, a third tab will appear
“Biometric”. Go to that tab and put the serial number
of the Biometric Reader. (8.3)
8.1
Important Note: The serial number of the reader can be
found on a sticker inside the reader, on the packaging box
and it can be search from the software (right click on the
portal/search devices/readers). (8.4 & 8.5)
To check if the reader is On Line, right click on the reader
and select “Check version”. In the Event Window a message
should appear “Device ON Line, Type: CV-940” (8.6)
8.3
8.5
8.2 8.4 8.6
Page 7 of 19
8.2 Enrolling Fingerprints From a Reader
CV-940 Series
1.
Open the Users Window and create a new user.
Click on “New User”, put a name and ID (card
number). (8.7)
2. Go to the “Biometric” Tab
3. Select the reader(with left click) from which the
enrollment will be done. (8.8)
4. Right click on the fingertip and select enroll. (8.9)
5. In the next 25 sec. present the finger on the selected
reader and the finger tip will turn red, with the
percentage of successful enrollment shown next to
the fingertip. (8.10). In these 25 sec. the reader will
continuously blink in orange.
6. Repeat point 4&5 for each finger that should be
enrolled.
7. Click on “Save New” and the fingerprint will be sent
automatically to all Biometric Readers where that user
has access, i.e. to all the readers according to the
Access Level assign to that user.
Example: If the user has “Unlimited” Access level then
the fingerprints will be sent to all readers, if the user has
Access level only for Reader 1 and Reader 3 then the
fingerprints will be sent only to those two readers.
Note: To check if all the fingerprints are sent to the
reader, right click on the reader and select “Memory
Status”. (8.11). In the event window a line will appear
indicating the number of fingerprints stored in the
reader. (8.12)
If more fingerprints are added for one user, all fingerprints
will send the same Wiegand Code to the controller, the
one written in the field User ID(card Number).
8.7
8.10
8.12
8.8 8.9
8.11
Page 8 of 19
8.3 Enrolling Fingerprints From Desktop Reader
CV-940 Series
Plug the Desktop Reader (CV-350ER) in the PC. If the
device is not installed automatically use the drivers
located on the CD provided with the Biometric reader. It
is installed in the same way as a USB Device. When the
desktop reader has been installed it will automatically
appear in the Software. (8.13)
1.
Open the Users Window and create a new user. Click
on “New User”, put a name and ID (card number). (8.7)
2. Go to the “Biometric” Tab.
3. Select the USB desktop Reader (with left click).
4. Place the finger on the CV-350ER, right click on the
fingertip and select enroll. (8.9)
5.
The finger tip will turn red, with the percentage of
successful enrollment shown next to the fingertip.
(8.10)
6. Repeat point 5 for each finger that should be enrolled.
7. Click on “Save New” and the fingerprint will be sent
automatically to all Biometric Readers where that user
has access, i.e. to all the readers according to the
Access Level assigned to that user.
If the reader is off line, the fingers will be sent once the
connection is established between CAMS server and the
reader. No need for additional enrollment or actions.
The fingerprints will be sent as soon as communication
is established.
Example: If the user has “Unlimited” Access level then
the fingerprints will be sent to all readers, if the user has
Access level only for Reader 1 and Reader 3 then the
fingerprints will be sent only to those two readers.
Note: To check if all the fingerprints are sent to the
reader, right click on the reader and select “Memory
Status”. (8.11) In the event window a line will appear
indicating the number of fingerprints stored in the
reader. (8.12)
If more fingerprints are added for one user, all fingerprints
will send the same Wiegand Code to the controller, the
one written in the field User ID(card Number).
8.7
8.9
8.11
8.13
8.10
8.12
Page 9 of 19
8.4 Deleting Fingerprints
CV-940 Series
In General, the fingerprints are stored in the Biometric
reader and in the Software.
Deleting can be done only in the readers or from
both places.
Deleting one user from the biometric reader
• Select the User
• Click on “Delete User”. The User together with its
fingerprints will be deleted from both the software
and the fingerprint readers. (8.14)
Deleting all users from the biometric reader
• Right click on the reader and select “Delete all users
from reader” (8.15)
Delete one or more fingerprints
• Select the User and open the “Biometric” tab
• Go to the fingertip that needs to be deleted, right click
and select ”Delete” for one finger or “Delete All” for all
fingers of the User.
• Click “Save Changes”
With this procedure the User’s fingerprints are deleted
from the software and from the reader. (8.16)
8.14 8.168.15
8.5 Uploading the Fingerprints to the Biometric Readers
• Right click on the biometric reader
• Select “Upload all users to reader”
• While receiving the fingerprints the reader will blink
in orange.
Note: Use this feature when you change or add a
reader, if pending tasks are deleted in the software or if
there are doubts that fingerprints in the reader memory
are not synchronized with the software database.
In normal usage, the fingerprints are sent automatically
and this feature is not used.
8.17
Page 10 of 19
8.6 Firmware Update
• Right-click on the reader and select Firmware update
menu (8.18)
• On the Firmware update window, click on the Browse
button (8.19). The default location of the firmware files
installed with CAMS is in the folder “Firmware”.
• Select the firmware file with a “xhc” extension.
• Click on the Upload button
Important: Wait for the update end message. Do not turn
off the reader, the software or any communication device
in between during the entire process.
CV-940 Series
8.18
8.7 Sensor Calibration
• Right click on the biometric reader and select
“Calibrate” and wait for confirmation message.
Note: It is recommended to do a calibration while
commissioning the reader and in cases when there
are problems with reading the fingers
8.8 Send Configuration
• Right-click on the reader and select the Send
configuration menu
• See the events panel to check the configuration flow
Note: The biometric reader gets its settings
automatically. This function is used if the reader was
off line while making the changes.
8.19
8.20
Page 11 of 19
8.21
8.9 Advanced Settings
Send This ID for:
• Unknown Finger sends the desired Wiegand when
an unknown finger is applied.
• Click on the Save & Exit button
Sound level:
Sound level of the device (ON or OFF)
Finger Acceptance Flexibility:
Accepted tolerance. The recommended value is
“Automatic Secure”.
Sensitivity:
Bio-sensor sensitivity, the recommended value is 7,
most sensitive.
9. Configuring the Biometric Readers in CBMS
CV-940 Series
8.22
CBMS is software for fingerprint management of Camden
Biometric readers, when used with third party
access controllers.
Main functions:
• Fingerprint Enrollment
It can be done by ANY Biometric reader in the network
or by Desktop (USB) Biometric reader.
• Fingerprint Transfer
Finger templates can be sent to any Reader in the
Network. Different Users can be sent to different
Biometric readers.
9.1 Add Reader
• Right-click on the portal connected to the
reader and select Add reader
• PIN Codes management and transfer
PIN Code length configuration (1 to 8 digits) and PIN
Code transfer.
• Wiegand Output Configuration
The Wiegand output of the Biometric reader can be
customized bitwise.
• Fill the Reader form
8.23 8.24
Page 12 of 19
9.1 Add Reader
CV-940 Series
• Click on Save and the reader icon appears
under the selected portal
8.25
• Right-click on reader and select Check Version
8.26
• If reader is online, new line is added on top of the
event table
• If reader is not online, following line is added on top
of the event table
8.28
• If reader is online, right click on reader and select
Send configuration
8.29
• Check at event table if configuration was successful
8.27
9.2 Edit Reader
• Right-click on the reader and select Properties
(Fig. 9.2 a)
• Edit reader properties and click Save & Exit button
• Right click on the reader and select Send
configuration (Fig. 9.2 b)
• Check at event table if configuration was
successful (Fig. 9.2 c)
9.3 Delete Reader
• Right-click on the reader and select
Delete reader
8.30
Fig. 9.2 a Fig. 9.2 b
Fig. 9.2 c
Page 13 of 19
Fig. 9.3
9.4 Calibrate Sensor
• Right-click on the reader and select Calibrate
• See the events panel to check the calibration flow
It is recommended to do sensor calibration once
after reader is mounted. Clean the fingerprint sensor
before calibration.
9.5 Enrolling Fingerprints From a Reader
1.
Open the Users Window and create a new user.
Click on “New User”, put a name and ID (card
number). (10.1)
2. Go to the “Biometric” Tab
3. Select the reader(with left click) from which the
enrollment will be done. (10.2)
4. Right click on the fingertip and select enroll. (10.3)
5. In the next 25 sec. present the finger on the selected
reader and the finger tip will turn red, with the
percentage of successful enrollment shown next to
the fingertip. (10.4). In these 25 sec. the reader will
continuously blink in orange.
6. Repeat point 4 & 5 for each finger that should be
enrolled.
CV-940 Series
Fig. 9.4
7. Click on “Save New” and the fingerprint will be sent
automatically to all Biometric Readers where that user
has access, i.e. to all the readers according to the
Access Level assign to that user.
Example: If the user has “Unlimited” Access level then
the fingerprints will be sent to all readers, if the user has
Access level only for Reader 1 and Reader 3 then the
fingerprints will be sent only to those two readers.
Note: To check if all the fingerprints are sent to the
reader, right click on the reader and select “Memory
Status”. (10.5). In the event window a line will appear
indicating the number of fingerprints stored in the
reader. (10.6)
If more fingerprints are added for one user, all fingerprints
will send the same Wiegand Code to the controller, the
one written in the field User ID(card Number).
10.1
10.4
10.6
10.2 10.3
10.5
Page 14 of 19
9.6 Enrolling Fingerprints From Desktop Reader
CV-940 Series
Plug the Desktop Reader (CV-350ER) in the PC. If the
device is not installed automatically use the drivers
located on the CD provided with the Biometric reader. It
is installed in the same way as a USB Device. When the
desktop reader has been installed it will automatically
appear in the Software. (10.7)
1.
Open the Users Window and create a new user. Click
on “New User”, put a name and ID (card number). (10.1)
2. Go to the “Biometric” Tab.
3. Select the USB desktop Reader (with left click).
4. Place the finger on the CV-350ER, right click on the
fingertip and select enroll. (10.3)
5.
The finger tip will turn red, with the percentage of
successful enrollment shown next to the fingertip.
(10.4)
6. Repeat point 5 for each finger that should be enrolled.
7. Click on “Save New” and the fingerprint will be sent
automatically to all Biometric Readers where that user
has access, i.e. to all the readers according to the
Access Level assigned to that user.
If the reader is off line, the fingers will be sent once the
connection is established between CAMS server and the
reader. No need for additional enrollment or actions.
The fingerprints will be sent as soon as communication
is established.
Example: If the user has “Unlimited” Access level then
the fingerprints will be sent to all readers, if the user has
Access level only for Reader 1 and Reader 3 then the
fingerprints will be sent only to those two readers.
Note: To check if all the fingerprints are sent to the
reader, right click on the reader and select “Memory
Status”. (10.5) In the event window a line will appear
indicating the number of fingerprints stored in the
reader. (10.6)
If more fingerprints are added for one user, all fingerprints
will send the same Wiegand Code to the controller, the
one written in the field User ID(card Number).
10.1
10.3
10.5
10.7
10.4
10.6
Page 15 of 19
9.7 Deleting Fingerprints
CV-940 Series
In General, the fingerprints are stored in the Biometric
reader and in the Software.
Deleting can be done only in the readers or from
both places.
Deleting one user from the biometric reader
• Select the User
• Click on “Delete User”. The User together with its
fingerprints will be deleted from both the software
and the fingerprint readers. (10.8)
Deleting all users from the biometric reader
• Right click on the reader and select “Delete all users
from reader” (10.9)
Delete one or more fingerprints
• Select the User and open the “Biometric” tab
• Go to the fingertip that needs to be deleted, right click
and select ”Delete” for one finger or “Delete All” for all
fingers of the User.
• Click “Save Changes”
With this procedure the User’s fingerprints are deleted
from the software and from the reader. (10.10)
10.8 10.1010.9
9.8 Uploading the Fingerprints to the Biometric Readers
• Right click on the biometric reader
• Select “Upload all users to reader”
• While receiving the fingerprints the reader will blink
in orange.
Note: Use this feature when you change or add a
reader, if pending tasks are deleted in the software or if
there are doubts that fingerprints in the reader memory
are not synchronized with the software database.
In normal usage, the fingerprints are sent automatically
and this feature is not used.
10.11
Page 16 of 19
9.9 Custom WIEGAND
CBMS has defined Wiegand 26 and 34 bit as standard
options and other 3 Wiegand settings as user definable.
• To setup custom Wiegand format
• Select Wiegand menu from Settings (Fig. 10.12)
• At Wiegand setup window select one from
customs Wiegand (Fig. 10.13)
• Set Wiegand parameter
• Click on Save button
CV-940 Series
Fig. 10.12
Note: Wiegand settings are out of scope for common end
user. Please ask your installer to set the parameters and
do not change it later. (Fig. 10.14)
For more information please refer to CBMS User
Manual
Fig. 10.13
Fig. 10.14
Page 17 of 19
10. WIEGAND Protocol Description
CV-940 Series
The data is sent over the lines DATA 0 for the logic “0”
and DATA 1 for the logic “1”. Both lines use inverted
logic, meaning that a pulse low on DATA 0 indicates a “0”
and a pulse low on DATA 1 indicates a “1”.When the lines
0 0
5V
D0
0V
1 ms
100 us
5V
D1
0V
Data bit 0 = approximately 100 us (microseconds)
Data bit 1 = approximately 100 us (microseconds)
Description for the 26 bits Wiegand format
are high, no data is being sent. Only 1 of the 2 lines
( DATA 0 / DATA 1 ) can pulse at the same time.
Example: data 0010....
1
Time between two data bits: approximately 1 ms
(millisecond). Both data lines (D0 and D1) are high.
0
Each data block consists of a first parity bit P1, a fixed 8 bits header, 16 bits of user code and a 2nd parity bit P2. Such
a data block is shown bellow:
Parity bit (bit 1) + 8 bits header + 16 bits user code = 2 bytes + Parity bit (bit 26)
P1 XXXXXXXX XXXXYYYY YYYYYYYY P2
Example: 170 31527
1 1 0 1 0 1 0 1 0 0 1 1 1 1 0 1 1 0 0 1 0 0 1 1 1 0
Note: Parity bits are calculated as follows:
P1 = even parity calculated over the bits 2 to 13 (X) P2 = odd parity calculated over the bits 14 to 25 (Y)
E A A A A A A A A B B B B B B B B B B B B B B B B O
11. Safety Precautions
• Do not install the device in a place subject to direct sun
light without protective cover.
• Do not install the device and cabling close to a source
of strong electro-magnetic fields like radio-transmitting
antenna.
• Do not place the device near or above heating
equipments.
• If cleaning, do not spray or splash water or other
cleaning liquids but wipe it out with smooth cloth
or towel.
• Do not let children touch the device without supervision
Note: that if the sensor is cleaned by detergent, benzene
or thinner, the surface will be damaged and the fingerprint
can’t be entered.
Page 18 of 19
12. Troubleshooting
CV-940 Series
The Red Led on the Biometric Reader
is blinking all the time
Enrollment from the desktop reader
can be done, but the Fingerprints are
not sent to all Biometric Readers in the
network
The Biometric Reader is not powered
ON. The tricolor LED is OFF.
Fingerprint (or PIN Code) is recognized
(the tricolor LED is green), but the
controller reports other ID number and
the access is denied
Electro static discharge influences the
Fingerprint Scan.
Reader reading performance is
decreased
There were 15 unsuccessful attempts of authentication (Finger or
PIN). The Red LED will turn off after the first accepted finger or PIN.
• Check the Ser.No of the Readers.
• Check if proper termination is done as described before
• Check if the Communication wires (A & B) are properly
connected to the reader
Check the power Supply (red & black wire)
• If the user is not deleted from the reader and the same user is
enrolled again with new ID, the reader will recognize the finger with
the first ID. To resolve this, delete all users from the reader and
upload all users to the reader
• Check the Wiegand Bus (yellow & white wire)
• Check if the ground of the controller and the Biometric
Reader is the same
• Check if the length between Biometric Reader and the
controller is less than 50m
Connect the housing of the Biometric Reader to the earth wire
• Check if fingerprint reading area is dirty. Do not clean the
device with any form of liquid. Use soft and dry cloth only
Reading area is damaged. If the damage is minor, try to calibrate
the sensor
• Retry after drying the wetness of your finger
Fingerprint is not recognized normally
• When your finger is too dry, touch your forehead and try again
When you have a cut on your registered finger, register another
fingerprint
Questions? Call us toll-free at 1-877-226-3369
Push Buttons Keypads Strikes Magnetic Locks Key Switches Relays & Timers Access Control
5502 Timberlea Blvd.,
Mississauga, ON Canada
L4W 2T7
www.camdencontrols.com
Toll Free: 1.877.226.3369
File: CV-940 Series
Installation Instructions.indd R1
Revision: 15/06/2015
Part No.: 40-82B174
Page 19 of 19
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