Narda SRM-3000 Selective Radiation Meter

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The Narda SRM-3000 has been replaced by the Narda SRM-3006.
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The Narda SRM-3000 Selective Radiation Meter (SRM) is a handheld selective measuring device for safety analysis of RF & microwave electromagnetic fields. It can also be used as a conventional RF spectrum analyzer for general field strength measurements.
 

The Narda SRM-3000 can be used by broadcasters, radio network operators, measurement service providers and public authorities to selectively measure the field exposure produced by individual telecom services, and assess the results in accordance with the applicable standards.Most measurements required in the mobile radio sector can be performed directly using the handheld device. The SRM immediately evaluates the results on site.
 

Features:

  • Complete solution for selective measurement of RF & microwave electromagnetic fields (100 kHz to 3 GHz)
  • Isotropic (non-directional) measurement with triaxial Antenna (75 MHz to 3 GHz)
  • Excellent immunity for operation in high field strengths
  • Automatic Antenna and cable detection
  • Results in V/m, A/m, power density or percentage of permissible limit
  • Automatic correlation of results with telecommunications services (e.g. TETRA, GSM, UMTS) based on user-defined tables
  • Automatic computation of contribution of individual services to overall field exposure (Safety Evaluation mode)
  • Resolution bandwidths (RBWs) up to 5 MHz for UMTS and W-CDMA
  • UMTS P-CPICH Demodulation mode for worst case extrapolation of UMTS Node-B base station emissions

 

Specifications:

SRM-3000 (basic unit)
Frequency range 100 kHz to 3 GHz
Modes Spectrum Analysis Safety Evaluation
UMTS – P-CPICH Demodulation Time Analysis
Frequency Resolution bandwidths
(RBW)
See specifications for each mode
Phase noise
(SSB)
30 kHz carrier spacing < - 85 dBc (1 Hz)
100 kHz carrier spacing < - 105 dBc (1 Hz)
1 MHz carrier spacing < - 120dBc (1 Hz)
Reference frequency Original deviation < 1.5 ppm
Aging < 0.5 ppm/year
Thermal drift < 2.0 ppm (within specified tempera- ture range)
Amplitude
Upper limit of measure-ment range (MR)
-27 dBm to +23 dBm (in steps of 1 dB)
Display range
From noise floor up to +26 dBm

Maximum RF power
+30 dBm
Maximum DC voltage
50 V
Intrinsic noise
-120 dBm for 1 kHz RBW, f > 20 MHz and no RF attenuation

RF attenuation

0 to 50 dB in steps of 1 dB (coupled with measurement range)

2nd order intermodulation products

= -57 dBc for two signals of level 9 dB below MR and a spectral line spacing of more than 100 kHz
3rd order intermodulation products = -70 dBc for two signals of level 9 dB below MR and a spectral line spacing of more than 500 kHz
RF Input Type N connector, 50 Ω
Return loss < 11dB for f = 2.4 GHz