Nedap N V XQ-MD4 Anti Pilferage system User Manual NCC4 v2 10

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Date Submitted	2004-11-25 00:00:00
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Document Author:	Nedap Retail Support - GO

NCC4
Date: 5 October 2004 Version 2.10
This information is furnished for guidance, and with no guarantee as to its accuracy or completeness; its publication conveys no license under any patent or other right, nor does
the publisher assume liability for any consequence of its use; specifications and availability of goods mentioned in it are subject to change without notice; it is not to be
reproduced in any way, in whole or in part, without the written consent of the publisher.
_________________________________________________________________________________________________________
© Nedap Retail Support P.O. Box 102 NL-7140 AC Groenlo the Netherlands
Technical Support:
Support
+31 (0) 544 47 15 55
support-rs@nedap.com
H. Hammer
+31 (0) 544 47 15 19
hans.hammer@nedap.com
H. Broekhuis
+31 (0) 544 47 15 02
han.broekhuis@nedap.com
Visitor’s address
Postal address:
Fax
Nedap Retail Support
Parallelweg 2d
Groenlo
Netherlands
Nedap Retail Support
Postbus 102
7140 AC Groenlo
+31 (0) 544 46 58 14
© 2004 Nedap Retail Support - Netherlands
Parallelweg 2d, 7141 DC Groenlo
The software / hardware described in this book / file is furnished under a license agreement and may be used only in accordance with the terms of
the agreement.
Documentation version 2.10
Copyright Notice
All Rights Reserved.
Any technical documentation that is made available by Nedap Retail Support is the copyrighted work of Nedap Retail Support and is owned by Nedap
Retail Support.
NO WARRANTY. The technical documentation is being delivered to you and Nedap Retail Support makes no warranty as to its accuracy or use. Any
use of the technical documentation or the information contained therein is at the risk of the user.
Documentation may include technical or other inaccuracies or typographical errors.
Nedap Retail Support reserves the right to make changes without prior notice.
No part of this publication may be copied without the express written permission of Nedap Retail Support, Parallelweg 2d, 7141 DC Groenlo,
Netherlands.
Trademarks
Nedap, the Nedap logo, Nedap EASi/Net and the Nedap EASi/Net are registered trademarks of Nedap N.V. Groenlo.
Other product names mentioned in this manual may be trademarks or registered trademarks of their respective companies and are hereby
acknowledged.
Printed in the Netherlands
© Nedap Retail Support 2004 – Groenlo Holland
NCC4
2.10
10.5.2004
GO
Table of content
Postal address:
Fax
DC power supply
HF
Data-com
RS 232 interface
I/O connector
Hand-terminal connector
The following points can be used
Indicator leds
Testpoints
Specifications
Revison-view:
© Nedap Retail Support 2004 – Groenlo Holland
NCC4
2.10
10.5.2004
GO
OS/T Network Communication & Control unit
The Network Communication & Control unit (NCC4) in the OS/T has several functions:
• Supplying the 33V DC power supply for all the units in the system. On 1 NCC4 it’s possible to
connect up to 16 receiver (NR4) or transmitters (NT4) units.
• Generating the HF sync signal for the whole system. This HF signal has a frequency of four times
8.2 MHz and sweeps between 30.... 36 MHz. One NCC4 has four outputs and on each output you
can connect a NR4, NT4 or an other NCC4.
• The NCC4 is data-com master for all connected units. All data-communication between the
connected units and the NCC4 will be initiated from the NCC4. With the external sync input from the
NCC4 it’s possible to integrate the NCC4 in a larger network with multiple NCC4's.
• Each NCC4 has a RS 232 communication connector from which it’s possible to connect to the
outside world, for example to a modem or to a PC. With this connection several things can be done,
such as remote-diagnostics and firmware-upgrades.
Figure 1 shows the block diagram of the OS/T NCC4.
Fig.1
© Nedap Retail Support 2004 – Groenlo Holland
NCC4
2.10
10.5.2004
GO
Description of the NCC4:
DC power supply
The 33 Volt DC Power voltage from the OS/T system is generated in a Switched-mode power unit,
which is connected with a short cable on connector K5. The power supply has a continuous DC output
current rating of 3.2 A.
HF
The HF signal is generated in a VCO. This VCO uses for its frequency control the 3 signals from the
local DSP: TD, in advance of the start pulse and T1 and T2 on 345 and 1334 s after the start pulse.
The signals T1 and T2 mark the time that the frequency of the NT4 passes the 7.7 and 8.7 MHz. A
saw-tooth generator generates the waveform, necessary to sweep the VCO. The saw-tooth generator
exists of a capacitor, charged with a constant current and is discharged at every pulse.
Regulation of the VCO happens only in the fly-back period to get the highest possible signal purity. By
using a buffer stage the HF-signal gets the requested level and will be merged with the data-com
signal. Then this signal is distributed to four output connectors K1 till K4.
Data-com
One of the important features from the OS/T system is the data-com over the coax-cable. With this
feature it’s no longer necessary to use an extra data-cable between the units, which simplify the
installation of the system. The NCC4 plays a central roll in providing the data-com. All the connected
units are interrogated periodically by the NCC4. If there are messages like an alarm on a connected
NR4, then the NCC4 will be process this and takes the necessary action: Sending a command, to turn
on the lamps on the activated aisle.
At the beginning of each sweep, on a fixed timeslot, the NCC4 sends a data-block. This data-block
may contain a question for a connected NR4 or NT4. The answer will be transmitted in another timeslot.
The transmission of data is accomplished by adding small pulses on the HF signal. With a low pass
filter and a sensitive amplifier these pulses can be recovered on the receiving side..
If multiple NCC4's are necessary to be fitted in a larger installation, then they have to be linked. Every
NCC4 is then a master for his own segment. The “upper neighbour” of a NCC4 is connected to a slave
sync input, while the “under neighbour” in the circuit will be connected on an output. The slave sync
input is doubled to link the incoming cable to the next segment of the “upper neighbour”. When the
NCC4 is the last one in a chain a terminator jumper must be placed.
A slave NCC4 may be switched off without disturbing the data communication.
RS 232 interface
Each NCC4 is equipped with a RS232 connector. With this it’s possible to connect a modem or a PC
to communicate with the OS/T system.
With these capabilities you can use remote-diagnostics, firmware-upgrade and system configuration.
The communication uses the standard UART circuit.
I/O connector
The NCC4 comes with an I/O connector with four opto-coupler inputs, four opto-coupler outputs and
four relay outputs with one voltage free make-and-break contact. All in- and outputs are galvanic
separated from the power supply. The in- and outputs may be used for camera activation, metal
detection alarm, extra alarm-lamps. The functionality of the in- and outputs is determined by the
software.
Hand-terminal connector
A standard NEDAP RS Handheld terminal may be connected to the NCC4. With these HT you can
edit the various local settings.
© Nedap Retail Support 2004 – Groenlo Holland
NCC4
2.10
10.5.2004
GO
Figure 2 shows the component arrangement of the NCC4 (Hardware version 4):
The following points can be used
K100
K101
K102
K1
K2
K3
K4
K5
K6
K7
K8
K9
slave sync input
slave sync input
50 ohm terminator
Output
Output
Output
Output
32V DC power input
power LED connection
50 ohm terminator in aid of K1
50 ohm terminator in aid of K2
50 ohm terminator in aid of K3
K10
K11
K202
K203
K205
K206
K207
K208
K209
C12
50 ohm terminator in aid of K4
50 ohm terminator in aid of K202
RS 485 interface connector
RS 232 interface connector
Hand-terminal connection
Relay outputs Ry3, Ry4
Relay outputs Ry1, Ry2
Opto outputs 1-4
Opto inputs 1-4
VCO linearity
Indicator leds
( Y = yellow, Rd = red, Gr = green)
D27
Power (Gr)
D220 NCC4 (Y)
(On= a tag is detected by the NR4)
D221 NCC4 comm fault (Rd) (On= a segment doesn’t answer)
D2
Sweep lock(Y)
D3
Center lock(Y)
Testpoints
Tp6
Tp7
Tp8
Tp9
Tp15
Tp16
Tp14
Sweep voltage
Master Tx
Master Rx
Master Clk
Slave Clk
Slave HF in
Slave HF 32MHz
© Nedap Retail Support 2004 – Groenlo Holland
Tp11
Tp12
Tp13
Tp20
Tp21
Tp22
Slave Tx
Slave Rx
Slave Start
T2
T1
TD
NCC4
2.10
10.5.2004
GO
Specifications
Mains NCC4:
Power Supply
Power Consumption
230 Volt 50 Hz
Max 150 Watt
NCC4-pcb:
Power supply
Current consumption
Sync input signal
Outputs (4x)
Frequency sweep
Sweep frequency
Maximal DC load to one or more outputs
Maximal DC load to one or more outputs
33 Volt DC
100 mA (excl connected slave units)
30-36 MHz, minimal 4 dB in 50 ohm (1Vtt)
30-36 MHz, nominal 10 dB in 50 ohm (2Vtt)
1400 kHz
600 Hz saw tooth form.
3.2 A (ca 16 slave units)at 230 V
2.0 A (ca 10 slave units)at 115 V
© Nedap Retail Support 2004 – Groenlo Holland
(90-220 Volt 50-60 Hz)
NCC4
2.10
10.5.2004
GO
Revison-view:
Hardware version 5:
Nr
Index
Date
april
2000
Description
Perform
- Jumper K11 removed and K202 became a feature
connector.
- Jumper K102 moved a little.
- Components are removed / changed.
© Nedap Retail Support 2004 – Groenlo Holland
Nedap
NCC4
2.10
10.5.2004
GO
Chapter
MD Receiver: Art no. 7818360
Description
The 66 kHz signal enters the receiver through a band-pass filter. A low noise opamp amplifies the
signal after which it’s available as two opposite signals. These signals are passed through an electronic
switch (4066). Through the data cable another 66 kHz sinus shaped signal enters which is primarily
shaped into two block signals.
The two opposite shaped signals each are feed to an electric switch, which is controlled by the two
block signals. The output of these switch looks like a double phase rectified signal This signal then
enters two separate filter blocks; one produce a “metal” signal and the other a noise signal. These two
signals are compared in the last opamp stage producing an alarm, which is available on the data cable.
The block diagram of the MD receiver:
metal
RX in
66Kc
66Kc
NE5532
4066
TL082
TL082
I/O
TL072
66Kc
74CD40106
noise
Antennas other than EQ45/EQ30
The other antennas in which the MD is used must be connected to the a-synchronous/symmetrical
antenna input. The antenna selector jumper must be set in the right position.
See also the component arrangement
Manual Metal Detection MK2 © NEDAP Retail Support 2002

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