Overview
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 | |
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| 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. | 7 | Escape The ESC button returns back to the previous level in the menu. |
| 2 | Function Keys "F1 .. F7" Parameters and functions displayed in the lowest line and functions displayed with ”F “, can be selected with the related function key. | 8 | LED 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). |
| 3 | Display All functions and parameters are displayed (8 lines with max. 40 characters). | 9 | LED 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. |
| 4 | EXIT The EXIT button resets the firmware to the main menu. This is only possible, if no test routine is running. | 10 | RF-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. |
| 5 | Cursor 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. | 11 | Current 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. |
| 6 | Exit 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 | |
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| 1 | Bridge AMP OUT – Coupler IN | 7 | IEEE Interface |
| 2 | Air output | 8 | USB Serial Interface |
| 3 | Bridge SG OUT – AMP IN | 9 | Remote Control Connector Not used. |
| 4 | Safety Circuit | 10 | Fail 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. |
| 5 | Power On Switch and Fuse | 11 | Fail 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. |
| 6 | Power selector 115V – 230V |
| Technical Data | ||
| Test Level CWS 500N1.3 | ||
| Output Level | 1 - 30Ve.m.f. after 6dB-attenuator | |
| Output power | 80W (nominal) | |
| Output impedance | 50 Ohm | |
| max. VSWR | 1:1.2 at all phase angles and at max. power (without destruction) | |
| Harmonic distortion (at max. power) | < 15dBc | |
| Test frequencies | CWS 500N1.3 | CWS 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 method | Amplitude modulation 80% <±5% and 1kHz <±10% acc. to IEC 61000-4-6 80% <±5% and 2Hz, 1kHz acc. to IEC 60601-1-2 | |
| Pulse modulation | 1Hz, 50% duty cycle acc. to EN 50130-4 | |
| General | 80% at Frequencies 2Hz, 400Hz,1kHz | |
| Other modulation | via ICD software Settings in Vector mode | |
| Signal Generator | ||
| Output level | -63.5 dBm to 0 dBm | |
| Step level | 0.5 dB | |
| Frequency range | 9 kHz to 1 GHz | |
| Output impedance | 50 ohm | |
| Calibration measurements | ||
| Cal data | 5 internal stores for calibration data. | |
| ICD | Software for the upload and download of Cal-files. | |
| LCD | On-line display of the test level and the preselected frequencies. | |
| Monitor input PM1000 | RF 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 time | general td = 0,3s - 9999.9s pulse modulation td = 3s - 9999.9s | |
| Rest time | tr = 0 / 0,3s - 9999.9s | |
| Output | ||
| Direct | N | |
| EUT control | ||
| BNC input | FAIL 1 Fail 1; test will be stopped immediately | |
| BNC input | FAIL 2 Fail 2; failure is detected, test continues (max. 10 failures) | |
| Test routines (integrated) | ||
| Quick Start | Immediate start, all parameters adjustable during testing. | |
| User test routines | 1. 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 procedure | Calibration of the complete test set-up. Internal storage of the Cal-files. | |
| Service | Service, Setup | |
| Interfaces | ||
| Serial Interface | USB | |
| Parallel IEEE 488 GPIB interface | Addresses 1 - 30 selectable All interfaces are included as standard features. | |
| Power meter PM 1000 | ||
| Frequency range | 9kHz – 1000 MHz | |
| Input range | Monitor -45 dBm ... +13 dBm FWD power -50 dBm ... +13 dBm REV power -50 dBm ... +13 dBm | |
| Max. Input MONITOR | 13dBm approx. 1.0 Vrms | |
| Accuracy | < ± 0.5 dB ( 0.09MHz...400MHz ) < ± 1.0 dB ( 0.01MHz...1000MHz ) | |
| Dual Directional Coupler | ||
| Frequency range | 10kHz – 1000 MHz | |
| Power | 150 W max. | |
| Insertion loss | 0.6 dB max. | |
| Mainline VSWR | 1.1:1 max. | |
| RF Amplifier ( build in ) | CWS 500N1.3 | CWS 500N1.4 |
| Class of Operation | Class A | Class A |
| Frequency range | 10 kHz .. 400 MHz | 100 kHz .. 300 MHz |
| Output power nominal | 80 W | 80 W |
| Gain | 48 dB nominal | 48 dB nominal |
| Input power for rated output | 0 dBm | 0 dBm |
| Input power max. | 10 dBm | 10 dBm |
| Input / Output Impedance | 50 Ω | 50 Ω |
| Input VSWR | 1.5: 1 max. | 1.5: 1 max. |
| General Data | ||
| Dimensions | 19"/3HE | 19"/3HE |
| Weight | 17.25 kg | 14.95 kg |
| Power supply | 110-230V/ max 50/60Hz | |
| Input power | max. 380W | |
| Power factor | cosΦ=0,98 at max output power | acc. to IEC 555 |
| Fuse | 230V: 2x3,15AT 115V: 2x6.3AT | |
| Cooling | Active cooling, air ventilation | |
| Environment conditions | 10°C - 35°C | 10°C - 40°C |
| Humidity | Max. 85 %, non condensing | |
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