MPB SEMS Manuel utilisateur

MPB S.r.l.

Via Giacomo Peroni 400/402

00131 Rome - Italy

Tel +39 0641200744

Fax +39 0641200653

info@gruppompb.com

www.gruppompb.com

MPB 2014 ver. 2_9

User’s manual

SEMS & SEMS LIGHT

Shielding Effectiveness Measurement

System

Updated to the software Version:

SEMS RX 1.32

SEMS TX 1.05

SEMS PC Utility 1.26

USER’S MANUAL

S E M S

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SAFETY NOTE

Read before using the product

MPB works to provide to its customers the best safety conditions available

complying with the current safety standards.

The instrumentation described in this manual has been produced, tested and left the

factory in conditions that fully comply the European standards.

To maintain it in safe conditions and ensure the correct use, these general

instructions must be fully understood and applied before using the product.

The SEMS is designed for industrial environment and laboratories and should be

used by skilled staff only.

MPB disclaims responsibility for a different use of the device.

USER’S MANUAL

S E M S

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Conformity Certificate

(in accordance with the ISO/IEC 17050-1)

This is to certify that the product: SEMS / SEMS LIGHT

(Measurement system of shielding effectiveness)

complies with the following European Standards:

Safety: CEI EN 61010-1 (2002)

EMC: EN 61326-1 (2007)

This product complies with the requirements of the Low Voltage Directive

2006/95/CE, and with the EMC Directive 2004/108/CE.

MPB S.r.l.

USER’S MANUAL

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Index

Gener

al information

Pag.

1.1. Introduction

1.2. System description

1.3. Composition of the system and optional accessories

1.4. Receiver front panel

1.5. Transmitter front panel

1.6. Receiver/transmitter rear panel

1.7. Technical specifications

Operating principle

2.1. SEMS receiver

2.2. SEMS transmitter

2.3. SEMS system

2.4. Power saving and recalibration

System use and operation

3.1. Turn on menu

3.2. Std Menu

3.2.1. Cal Menu

3.2.2. High Dynamic (HiDyn)

3.2.3. Show Menu

3.2.4. Meas Menu

3.2.5. Menu Sniff

3.3. WIZ Menu

3.3.1 Measurements using wizard

3.4. STP Menu

3.5. Measuring the shielding attenuation

3.6. Calibration using CalKit

3.7. Measurement with Rod antennas mod. R1

3.8.Unconnected mode

3.9. Prequiet mode

3.10.SEMS Light

SEMS PC Utility

software, controls and

functions

4.1. Installation

4.2. Connecting the instrument

4.3. Retrieving a measurement

4.4. Program a frequencies List with Scan or

table List

4.5. Working with the results

4.6. Firmware upgrade

USER’S MANUAL

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1. General information

1.1. Introduction

SEMS is thought to comply the raising need to test and verify the shielding

effectiveness of shielded environment in hospitals and industries.

This system allows to measure automatically with high speed and accuracy the

attenuation value of the magnetic and electric field in shielded environments.

1.2. System description

The shielding effectiveness measurement system has a transmitter and a receiver,

both of them are provided with a pair of very small antennas, to measure the

magnetic and electric field attenuation.

Contrary to today’s available systems, that measure the shielding effectiveness on

few frequency points, SEMS allows to perform a complete test on the whole

frequency ranges continuously. Another improvement compared to the standard

system is the synchronization component, TX and RX are connected by a wireless

system that allows to perform automatically the measurement minimizing the user’s

errors.

Picture n°01

SEMS System

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1.3. Composition of the system and optional accessories

Model

SEMS KIT 1

SEMS LIGHT

RX Unit (10kHz…300MHz) üOnly until

96MHz

TX Unit (10kHz…300MHz) üü

Biconical antennas Mod. B1 (60…300MHz) ü¡

Rod antennas Mod. R1 (1…60MHz) ¡¡

Loop antennas Mod. L1 (2…128MHz) üü

Loop antennas Mod. L2 (10kHz…4MHz) ¡¡

Loop antennas Mod. L3 for RF Leak ¡¡

Dipole antennas Mod. D1 (40…300MHz) ¡¡

RS/232 Wireless Key Bluetooth technology üü

RS232/USB cable to download memory of the

SEMS and for programming üü

Battery Charges üü

Carrying bag Mod. SEMS-CC üü

Antenna adapters N(m)-N(m) üü

Cal-Kit 4 attenuators 30 dB/each ¡¡

Cal-Kit Accredia Certificate ¡¡

Woden tripode Mod. TR-02 Hight adjustable ¡¡

Optical link Mod. LO with 20m fiber ¡¡

Software Mod. SEMS-SW üü

User’s manual onto USB key üü

Standard Calibration Certificate SEMS-STD üü

Option ¡

Loop Mod. L-2 Rod Mod.R1 Tripode Mod.TR-02-A Dipole Mod. D-1 Loop Leak Mod. L-3

Picture n°02

TIPS TO HAVE THE BEST

DYNAMIC

USER’S MANUAL

S E M S

DYNAMIC

WITH DIPOLE ANTENNA MODEL D1

Frequency range

[MHz]

Extended

element

200-300 0

140-240 0+1

90-180 0+1+2

70-140 0+1+2+3

40-120 0+1+2+3+4

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WITH DIPOLE ANTENNA MODEL D1

USER’S MANUAL

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1.4. Receiver front panel

In the Picture below(n°03) is represented SEMS receiver front panel. It has a

display and a command keyboard.

Picture n°03

1.5. Transmitter front panel

The SEMS transmitter (Picture n° 04) has no command button but only a power

button and a led to indicate that the transmission is active, since the commands are

sent by the receiver using the wireless connection.

Picture n°04

Alphanumeric display

Keyboard

RF in 50 Ohm

N female connector

Power button

RF out 50 Ohm

N female connector

Power button

LED on when

transmission is active

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1.6. Receiver / Transmitter rear panel

The rear panels (Picture n° 05) are the same for both devices and upon them is

possible to find the serial number, the thread used for the tripod, the battery charger

connector and the RS232 interface for the wireless link.

Picture n°05

Important note: Always use the battery charger provided with the instrument to

avoid serious damages to the devices and operator’s injuries.

Important note: The battery charger must be connected to both devices (Tx and

Rx) turned off.

RS232

Serial

number

Thread insert ¼

Batte

ry charger

connector

USER’S MANUAL

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1.7. Technical specifications

Frequency range for TX/RX

Resolution 10 kHz…300 MHz (SEMS Light up to 96 MHz)

10 Hz

RF out (TX module)

Max output power (typical) Zout 50 Ω, N fem.

+30 dBm

RF in (RX module)

VSWR

Attenuator

Max input power

Dynamic Range

Zin 50 Ω, N fem.

< 1.2

0…20dB

110 dBuV

120 dB

IF bandwidth (RX module)3 dB bandwidth 5/150Hz

Attenuation measurement accuracy

(typical) 10 kHz…30 MHz ± 1.0 dB

30 MHz…300 MHz ± 1,5 dB

I/O interface RS232 / Wireless

Buzzer To set on attenuation level

International standard compliance MIL-Std-285 IEEE Std 299 EN 50147-1

NSA65-6

Operating temperature 0°….40°C

Battery Irreplaceable and rechargeable Li-Ion

(6 h operating time)

Antennas

Loop Mod.L-1

Loop Mod.L-2

Rood Mod. R-1

Dipole Mod. D-1

Loop Mod. L-3

Biconical Mod. B1

Frequency range 2…128 MHz

Diameter 30 cm

Frequency range 10 kHz…4 MHz

Diameter 30 cm

Frequency range 1…60 MHz

Adjustables on lenght

Frequency range 40…300 MHz

Adjustable on extension

Used for RF Leak

Frequency range 60…300 MHz

Width 35 cm

Accessories

Wooden Tripode Mod. TR-02-A

Optical Link Mod. LO

Adjustable in high

With 20 m. fiber

Calibration Set-Up and Measurement Programmable with the software

Weight and dimensions

Overall weight

Case dimensions

9,4 kg

52x43x23cm

Technical specifications may change without notice

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