> Application/Test Type>Immunity and Emissions Testing>Em Test CWS 500N1.4 RF Conducted Immunity Test System for IEC 61000-4-6

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Em Test CWS 500N1.4 RF Conducted Immunity Test System for IEC 61000-4-6

Refurbished

  • Test procedure acc. IEC 61000-4-6 Ed. 4
  • Built-in amplifier saturation and linearity check
  • Built-in power amplifier 25 to 80 watts, 10 kHz to 400 MHz
  • Built-in power meter, 9 kHz to 1 GHz
  • Built-in dual directional coupler
  • Automatic calibration via built-in power meter
  • Connection for external amplifiers up to 1 GHz
  • USB-Interface
  • Software for Windows 7, Windows 8

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Manual

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Test Equipment Description

The CWS 500N1.4 is the most compact single box test equipment for testing conducted rf immunity per IEC 61000-4-6 Ed. 3 and Ed. 4 and related standards with a frequency range of 100 kHz to 300 MHz. Apart from the 1 kHz 80 % AM signal the generator also generates a 2 Hz 80 % AM signal to test medical appliances and a 1 Hz PM signal with 50 % duty cycle required to test safety equipment like fire alarms. Equipped with a 1 GHz current monitor the CWS 500N1.4 can be used up to 1 GHz by means of an external amplifier. EM TEST supplies a large range of CDNs, EM clamp and current injection clamps as well as the corresponding calibration accessories. Full compliant levelling can be run from the front panel of the CWS 500N1.4 storing the results in 5 memory spaces is available.

Operating Functions

Front Panel

EM Test CWS 500 Front View
1"Test On"
By pressing the key "TEST ON", the test procedure can be started with the pre-selected parameters and amplifier is turned ON.		7Escape
The ESC button returns back to the previous level in the menu.
2Function Keys "F1 .. F7"
Parameters and functions displayed in the lowest line and functions displayed with ”F “, can be selected with the related function key.		8LED Current Probe Input
At the BNC output the current pulse of the generator can be measured. Dividing ratio is 10:1 (5V at 50A pulse).
3Display
All functions and parameters are displayed (8 lines with max. 40 characters).		9LED RF Output
When the RF output is active this LED on the front panel is illuminated to indicate that a test signal is applied to the test object.
4EXIT
The EXIT button resets the firmware to the main menu. This is only possible, if no test routine is running.		10RF-Output
At this output the RF power is available. The 6dB-attenuator is connected via coaxial cable. For conducting tests together with CDN’s, EM clamps or current injection clamps, the generator must always be loaded with a 6dB-attenuator as per IEC 61000-4-6.
5Cursor key
Parameters and functions can be changed during the test. The selection of these parameters is done with the cursor, moving it to the left or to the right. The increment value of the selected parameters in the lowest line can also be selected with the cursor key.		11Current Probe Input
For tests with a coupling clamp where the EUT current has to be monitored, the current probe can be connected to this input.
6Exit Knob (Inc / Dec)
This knob increments or decrements test parameters with a numeric value or selects parameters from a list.		 ATTENTION: Do not connect the RF output directly to this input otherwise the CWS500 might damage.

Rear view

EM Test CWS 500N1.4 Rear View
1Bridge AMP OUT – Coupler IN

7IEEE Interface
2Air output

8USB Serial Interface
3Bridge SG OUT – AMP IN9Remote Control Connector
Not used.

4Safety Circuit10Fail 1 Detection "Stop"
The BNC input FAIL 1 is for failure detection on the EUT. If the input is set to ground (chassis), the
CWS 500N1.x generator stops the actual test routine and terminates the test. It is not possible to continue
the test routine.

A complete restart of the routine will be necessary. The message "FAIL 1" indicated on the LCD-Display as
well as in the icd.control software.
5Power On Switch and Fuse11Fail 2 Detection "Pause"
The BNC input FAIL 2 is for failure detection on the EUT. If the input is set to ground (chassis), a failure event detects, and the test continues normally. After 10 FAIL 2 events the program will stop and the message "FAIL 2: 10" indicates on the LCD-Display as well as in the icd.control software.
6Power selector 115V – 230V

Technical Data
Test Level CWS 500N1.3
Output Level1 - 30Ve.m.f. after 6dB-attenuator
Output power80W (nominal)
Output impedance50 Ohm
max. VSWR1:1.2 at all phase angles and at max. power (without destruction)
Harmonic distortion
(at max. power)		< 15dBc
Test frequenciesCWS 500N1.3CWS 500N1.4
Sinusoidal (CW)10 kHz – 400 MHz               100 kHz – 300 MHz   step: 1kHz
 In the menu QUICK START the step size can be selected by the user
Modulation
Modulation methodAmplitude modulation
80% <±5% and 1kHz <±10% acc. to IEC 61000-4-6
80% <±5% and 2Hz, 1kHz acc. to IEC 60601-1-2
Pulse modulation1Hz, 50% duty cycle acc. to EN 50130-4
General80% at Frequencies 2Hz, 400Hz,1kHz
Other modulationvia ICD software Settings in Vector mode
Signal Generator
Output level-63.5 dBm to 0 dBm
Step level0.5 dB
Frequency range9 kHz to 1 GHz
Output impedance50 ohm
Calibration measurements
Cal data5 internal stores for calibration data.
ICDSoftware for the upload and download of Cal-files.
LCDOn-line display of the test level and the preselected frequencies.
Monitor input PM1000RF monitor input for calibration procedures and current probes measurement. Input voltage for current monitoring V max = 1.0 V rms (13dBm)
Cal data for current probe (CP)2 internal stores ; ( download with ICD software )
A download will reduce data to 10/ decade and frequency range 100kHz ... 300MHz
Timing
Dwell timegeneral td = 0,3s - 9999.9s
pulse modulation td = 3s - 9999.9s
Rest timetr = 0 / 0,3s - 9999.9s
Output
DirectN
EUT control
BNC inputFAIL 1 Fail 1; test will be stopped immediately
BNC inputFAIL 2 Fail 2; failure is detected, test continues (max. 10 failures)
Test routines (integrated)
Quick StartImmediate start, all parameters adjustable during testing.
User test routines1. Voltage sweep
2. Frequency sweep
3. Dwell time sweep
Standard test routines.1. Level 1-3 acc. to IEC 61000-4-6
2. Automatic Level X - Level Y
Cal procedureCalibration of the complete test set-up. Internal storage of the Cal-files.
ServiceService, Setup
Interfaces
Serial InterfaceUSB
Parallel IEEE 488 GPIB interfaceAddresses 1 - 30 selectable
All interfaces are included as standard features.
Power meter PM 1000
Frequency range9kHz – 1000 MHz
Input rangeMonitor -45 dBm ... +13 dBm
FWD power -50 dBm ... +13 dBm
REV power -50 dBm ... +13 dBm
Max. Input MONITOR13dBm approx. 1.0 Vrms
Accuracy< ± 0.5 dB ( 0.09MHz...400MHz )
< ± 1.0 dB ( 0.01MHz...1000MHz )
Dual Directional Coupler
Frequency range10kHz – 1000 MHz
Power150 W max.
Insertion loss0.6 dB max.
Mainline VSWR1.1:1 max.
RF Amplifier ( build in )CWS 500N1.3CWS 500N1.4
Class of OperationClass AClass A
Frequency range10 kHz .. 400 MHz100 kHz .. 300 MHz
Output power nominal80 W80 W
Gain48 dB nominal48 dB nominal
Input power for rated output0 dBm0 dBm
Input power max.10 dBm10 dBm
Input / Output Impedance50 Ω50 Ω
Input VSWR1.5: 1 max.1.5: 1 max.
General Data
Dimensions19"/3HE19"/3HE
Weight17.25 kg14.95 kg
Power supply110-230V/ max 50/60Hz
Input powermax. 380W
Power factorcosΦ=0,98 at max output poweracc. to IEC 555
Fuse230V: 2x3,15AT
115V: 2x6.3AT
CoolingActive cooling, air ventilation
Environment conditions10°C - 35°C10°C - 40°C
HumidityMax. 85 %, non condensing

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