The E4991A RF IMPEDANCE / MATERIAL and 4294A PRECISION IMPEDANCE ANALYZERS offer impedance measurement and powerful built in analysis function for frequency domains 1 MHz - 3 GHz and 40 Hz - 110 MHz, respectively.
4294A impedance analyser provides accurate impedance measurement and analysis of a wide variety of electronic devices (components and circuits) as well as electronic and non-electronic material.
The E4991A uses an RF-IV technique, as opposed to the reflection measurement technique, for more accurate impedance measurement over a wide impedance range. Basic impedance accuracy is +/-0.8%. High Q accuracy enables low-loss component analysis. The internal synthesizer sweeps frequency from 1 MHz to 3 GHz with 1 mHz resolution. The E4991A provides the total dielectric/magnetic material measurement solutions in wide frequency range from 1 MHz to 1 GHz.

4294A key specifications:

• Operating frequency: 40 Hz to 110 MHz, 1 mHz resolution
• Basic impedance accuracy: ±0.08%
• Q accuracy: ±3% (typical) @ Q = 100, f ≤ 10 MHz
• Impedance range: 3 mΩ to 500 MΩ
• Measurement time: 3 msec/point @ f ≥ 500 kHz, BW = 1 (fast)
• Impedance parameters: IZI, IYI, θ, R, X, G, B, L, C, D, Q
• DC bias:
  - 0 to ±40 V/100 mA, 1 mV/40 µA resolution
  - Constant voltage/constant current mode, DC bias V/I monitor function

E 4991A key specifications:

• Frequency Range: 1 MHz to 3 GHz Resolution: 1 mHz
• Basic accuracy: +/- 0.8 %
• Oscillator level:
         Power (when 50 Ω load is connected to test port):
              -40 dBm to 1 dBm (frequency ≤ 1 GHz)
              -40 dBm to 0 dBm (frequency > 1 GHz)
         Current (when short is connected to test port):
               0.0894 mArms to 10 mArms (frequency ≤ 1 GHz)
               0.0894 mArms to 8.94 mArms (frequency > 1 GHz)
         Voltage (when open is connected to test port):
               4.47 mVrms to 502 mVrms (frequency ≤ 1 GHz)
               4.47 mVrms to 447 mVrms (frequency > 1 GHz)
• Resolution: 0.1 dB
• Accuracy: (Power, when 50 Ω load is connected to test port)
        Frequency ≤ 1 GHz:
              ±2 dB (23 °C ± 5 °C)
              ±4 dB (5 °C to 40 °C)
        Frequency > 1 GHz:
              ±3 dB (23 °C ± 5 °C) ± 5 dB (5 °C to 40 °C)
• Output impedance: 50 Ω (nominal)

Services: Dielectric/magnetic material measurements in frequency ranges 40 Hz -110 MHz and 1 MHz - 3 GHz.