The ZPV is designed for critical applications in control engineering and for crystal, antenna, amplifier, and filter measurements. 

ZPV with Tuner ZPV-E3

ZPV-E3 allows vector measurements, two-port and group-delay measurements in 50 ohm coaxial systems over a wide frequency and amplitude range. 

FEATURES & SPECIFICATIONS:

Frequency Range: 0.3 to 2 GHz, usable to 2.5GHz.
Dual Inputs 50 ohms:
                   Sensitivity:
                             Channel A: 1200 uV (typ 400 µV), <1 MHz / 1000 µV (typ 300 uV), >1 MHz
                             Channel B: 5 µV (typ 3 µV)
Voltage Accuracy: (100mV) ± 0.2 dB to -2.3 dB depending on frequency
Voltage Ratio: Range: -90 to +70 dB / Accuracy: 1.5%, >1020 MHz
Phase: Range: -180° to +180° / Accuracy (dependant on frequency & amplitude): 0.5°