CAMDEN CV-940 Series User manual

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 ........................................................................................................................... 08
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

CV-940 Series
2. Specifications
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).
Conguration 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 conguration. 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.
Fingerprint capacity up to 9500 fingerprints
Technology Biometry
Authentication Finger
Fingerprints per user 1-10 fingerprints
Interface Wiegand 8 to 128 bits; Default: Wiegand 26bit
Protocol programming By CAMS software (CV-350 system) and CBMS (all access control systems)
Cable distance 164 ft. (50m)
Fingerprint Sensor Type Capacitive
1:1000 identification time 970 msec, including feature extraction time
Fingerprint enrolment On the reader or from the USB desktop reader (CV-350ER)
Panel Connection Cable, 3 ft. (1m)
Green and Red LED Externally Controlled
Orange LED Idle mode
Buzzer Yes
Backlight ON/OFF Yes, by software settings
Tamper Yes
Consumption 100mA
IP Rating 65
Power supply 12V DC
Operating Temperature 5°F to +122°F (-15°C to 50°C)
Dimensions 3 5/8" W x 2" H x1" D (92mm x 51mm x 25mm)
Housing Moulded Aluminium
Color Silver, Red, Charcoal, White
Page 3 of 19
1. Description
2”
(51mm)
3 5/8”
(92mm)
1”
(25mm)

CV-940 Series
3. Mounting
+12V
gnd
d0
d1
xx
xx
xx
xx
+
1
2
V
g
n
d
d
0
d
1
xx
xx
xx
xx
4. Wiring
12V DC
GND
A
B
LR-
LG-
D1
D0
Tamper
Tamper
12V DC
Ground
RS485 A
RS485 B
Red LED -
Green LED -
Data 1
Data 0
Tamper Switch(NO)
Tamper Switch(NO)
B
12V DC
D0
D1
GND
A
Tamper
Tamper
RS485
Orange
Yellow
Red
Black
Pink
Violet
Green
Gray
Blue
White
WIEGAND
LED Red -
LED Green -
5. Connecting Biometric Readers to CV-350 Controller
LD16
R55
C41
C28
L2
R36
LD20
R18
R25 R24
C40
R10
C34
L10 L11
C18
C33
R9
C42
C1
R5
R45
C43
C44
R28
R21
C45
D13
LD14
R46
C3
C5
R38
ZD3 C29
L9
LD13
R14
ZD4 C32
R19
R37
ALD17 ALD19
ALD18
L7
C27
L6
C16
C15
RX4
D5
D10
R32 R33 R35
R49
IC6
ZD5
ZD6
R22
L3
R53
R34
TAS1
IC11
R15
IC15
R3
R4
L8
R47
FUSE1
IC8
R20
R16
R11
C2
X1
C4
IC7 ICN2
R1
C13
C12
ICN1
R23
R48
A
LD5
RE1 RE3
A
LD8
X3
IC1
C6
U5
L5
L4
RE4RE2
A
LD6 A
LD9
ZD2
LD15
R13
ZD1
R54
R50
R6
IC12 R17
R7
R62
ALD23
D3
D2
RX3
J1
Rb6
R2
LD21
IC2
H1 ALD22
BAT
U1
IC5
FUSE2
IC3
U4
A
A
IC1
A
A
A
A
Earth
screw
Free Led 1 Free Led 2
GND
12V out
D0
D1
Free Led 1 Free Led 2
GND
12V out
D0
D1
Door Sensor2
Door Sensor1
Exit Button1
Exit Button2
GND
GND
Free In 2 -
Free In 2 +
Free In 1 -
Free In 1 +
Rx Tx Busy System
OK
Door 1 Door 2
Free Out 1 Free Out 2
TCP/IP Earth
12Vdc Out
12V
gnd
D1
D0
12V
gnd
led2led1
12V
IN1
In1
In2
In2
+
-
+
-
D1
D0
12V
gnd
led2led1
Pb2
Pb1 Ds2Ds1
gnd gnd
COM
NC1NO1 NC2NO2
COM
COM
NC3NO3 NC4NO4
COM
GND
BA
gnd
Fuse
Ser No: 11-04-16-013
Mac: 00-04-A3-16-90-D
RoHS
pink
violet
green
orange
black
red
white
yellow
A
B
LG-
LR-
GND
+12V
D0
D1
164 ft. (50m) max.
• The Biometric readers can be connected to virtually
any controller that conforms to Wiegand format
standards (standard Wiegand 26bit or self-dened
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.
Page 4 of 19

CV-940 Series
Page 5 of 19
5.1 Connecting Biometric Readers In Same RS485 Line with the CV-350 Controllers
• 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 congured 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
of devices in RS485 line (total cable length,
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.
RS485
3,280 ft. (1 km) max. / 32 Units
(CV-350 + Biometric Readers)
50 ohm 50 ohm
TCP/IP gnd gnd
Stub
Jumper for
RS485 termination
16 ft.
(5m) max.
5.2 Connecting Biometric Readers When All The Controllers Have
TCP/IP Communication
TCP/IP
164 ft.
(50m)
max.
164 ft.
(50m)
max.
164 ft.
(50m)
max.
Switch
• 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.
• 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.

CV-940 Series
Page 6 of 19
6. Connecting Biometric Readers To Third Party Controllers
• 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.
• The Biometric readers communicate with each other
with a RS485 and with the PC Software through
a Converter.
• The RS485 Line should be congured 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.
CBMS Software
RS485 A
RS485 B
A
B
3rd party controller
- + D0 D1 - + D0 D1
3rd party controller
- + D0 D1 - + D0 D1
CV-940-SER
CV-940-USB
CV-940-TCP
CV-350ER
USB Desktop Reader
optional
7. Enrollment

CV-940 Series
8. Configuring the Biometric Readers in CAMS Software
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)
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)
8.1
8.2 8.4 8.6
8.3 8.5
Page 7 of 19

CV-940 Series
8.2 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). (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
8.11
8.8 8.9
Page 8 of 19

CV-940 Series
8.3 Enrolling Fingerprints From Desktop Reader
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
8.10
8.9
8.11
8.13
8.12
Page 9 of 19

CV-940 Series
8.4 Deleting Fingerprints
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
Page 10 of 19
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

CV-940 Series
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.
8.18
8.19
8.20
8.21
Page 11 of 19
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.

CV-940 Series
Page 12 of 19
8.9 Advanced Settings
9. Configuring the Biometric Readers in CBMS
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.
• 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.
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.
9.1 Add Reader
• Right-click on the portal connected to the
reader and select Add reader
• Fill the Reader form
8.22
8.23 8.24

CV-940 Series
9.1 Add Reader
• Click on Save and the reader icon appears
under the selected portal
• If reader is online, right click on reader and select
Send configuration
Page 13 of 19
• If reader is online, new line is added on top of the
event table
• Check at event table if configuration was successful
• Right-click on reader and select Check Version
• If reader is not online, following line is added on top
of the event table
9.3 Delete Reader
9.2 Edit Reader
• Right-click on the reader and select
Delete 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)
Fig. 9.2 a Fig. 9.2 b
Fig. 9.2 c
Fig. 9.3
8.25
8.28
8.29
8.30
8.26
8.27

CV-940 Series
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.
Page 14 of 19
Fig. 9.4
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.
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 10.5
10.2 10.3

CV-940 Series
Page 15 of 19
9.6 Enrolling Fingerprints From Desktop Reader
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
10.4
10.3
10.5
10.7
10.6

CV-940 Series
9.7 Deleting Fingerprints
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

CV-940 Series
Page 17 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
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. 10.12
Fig. 10.13
Fig. 10.14

CV-940 Series
Page 18 of 19
10. WIEGAND Protocol Description
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
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....
Data bit 0 = approximately 100 us (microseconds)
Data bit 1 = approximately 100 us (microseconds)
Time between two data bits: approximately 1 ms
(millisecond). Both data lines (D0 and D1) are high.
5V
0V
5V
1 ms
100 us
0V
D0
D1
10
0 0
Description for the 26 bits Wiegand format
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.

CV-940 Series
Push Buttons Keypads Strikes Magnetic Locks Key Switches Relays & Timers Access Control
File: CV-940 Series
Installation Instructions.indd R1
Revision: 15/06/2015
Part No.: 40-82B174
Page 19 of 19
Questions? Call us toll-free at 1-877-226-3369
The Red Led on the Biometric Reader
is blinking all the time
There were 15 unsuccessful attempts of authentication (Finger or
PIN). The Red LED will turn off after the first accepted finger or PIN.
Enrollment from the desktop reader
can be done, but the Fingerprints are
not sent to all Biometric Readers in the
network
• 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
The Biometric Reader is not powered
ON. The tricolor LED is OFF. Check the power Supply (red & black wire)
Fingerprint (or PIN Code) is recognized
(the tricolor LED is green), but the
controller reports other ID number and
the access is denied
• 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
Electro static discharge influences the
Fingerprint Scan. Connect the housing of the Biometric Reader to the earth wire
Reader reading performance is
decreased
• 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
Fingerprint is not recognized normally
• Retry after drying the wetness of your finger
• When your finger is too dry, touch your forehead and try again
When you have a cut on your registered finger, register another
fingerprint
12. Troubleshooting
5502 Timberlea Blvd.,
Mississauga, ON Canada
L4W 2T7
www.camdencontrols.com
Toll Free: 1.877.226.3369