Narda NBM-550 Broadband Field Meter
Description
The NBM-500 Series is the most accurate non-ionizing radiation survey system available. It provides the broadest frequency coverage of electric and magnetic fields. Both flat response probes and probes shaped to international standards are available. All NBM probes have a non-volatile memory containing device param¬eters and calibration data. Probes are calibrated independently of the meter. Any NBM probe can be used with any NBM-500 Series meter and still maintain total calibration.
Features
- Available with Isotropic Probes to cover 100 kHz to 60 GHz
- Large Graphical Display
- Intelligent Probe Interface with Automatic Probe Parameter Detection
- Fully Automatic Zeroing
- Extensive Memory for Logging of up to 5000 Results
- GPS Interface and Mountable Receiver for Positioning Data Documentation (Optional)
- Voice Recorder for Adding Comments (Optional)
Specifications
|
Display Type |
Transflective LCD, monochrome |
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Display Size |
10 cm (4 inch), resolution 240 x 320 dots |
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Backlight |
White LEDs, selectable illumination time (OFF, 5s, 10s, 30s, 60s, PERMANENT) |
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Refresh Rate |
200 ms for bar graph and graphics, 400 ms for numerical results |
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MEASUREMENT FUNCTIONS |
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Result Units |
mW/cm2, W/m2, V/m, A/m, % of Standard |
|
Display Range, Fixed Triads |
0.0001 to 9999 for all units (4 digits) |
|
Display Range, Variable Triads |
0.01 V/m to 100 kV/m0.027 mA/m to 265.3 A/m0.265 μW/m2 to 26.53 MW/m2 0.027 nW/cm2 to 2.653 kW/cm2 0.0001% to 9999% |
|
Result Types (Isotropic, RSS) |
Actual (ACT), Maximum (MAX), Minimum( MIN), Average (AVG), Maximum Average (MAX AVG) |
|
Result Types (X-Y-Z mode) |
Actual X, Actual Y, Actual Z (requires a probe with separate axes) |
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Averaging Time |
Selectable, 4 seconds to 30 minutes (2 second steps) |
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Spatial Averaging |
Discrete or continuously |
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Multi-position Spatial Averaging |
Averaging of up to 24 spatially averaged results, each position and total will be stored |
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History View |
Graphical display of actual results versus time (span of 2 minutes to 8 hours) |
|
Frequency Correction |
1 kHz to 100 GHz or OFF (direct frequency entry, interpolation between calibration points) |
|
Hot Spot Search |
Audible indicator for increasing and decreasing field strength (result type Act or Max) |
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Alarm Function |
2 kHz audible signal (4 Hz repetition), adjustable threshold |
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Timer Logging |
Start time pre-selection: up to 24 hours or immediatelyLogging duration: up to 100 hoursLogging interval: 1 second to 6 minutes (in 11 steps) |
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RESULTS MEMORY |
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|
Physical Memory |
12 MB non-volatile flash memory for measurement results and voice comments |
|
Storing Capacity |
Up to 5000 results (including test parameters, time stamp and GPS data when available) |
|
INTERFACES |
|
|
Remote Control |
Via USB or optical RS-232 interface (selectable) |
|
USB |
Serial, full duplex, 460 kBaud (virtual COM port), multi-pin connector |
|
Optical Interface |
Serial, full duplex, 115 kBaud, no parity, 1 start and 1 stop bit |
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Earphone |
3.5 mm TRS, > 16 ohms (mono), for voice recorder option only |
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External Trigger (to store results) |
Uses the multi-pin connector. Interface cable with BNC connector available as an option, triggers when contacts shorted. |
|
External GPS Receiver |
Uses the multi-pin connector. GPS receiver with interface cable is available as an option |
|
Probe Interface |
Plug-and-play auto detection, compatible with all NBM series probes |
