Vector Voltmeter Option

• Similar functionality to the HP 8508A VVM
• Source and directional coupler are inside the FieldFox
• Requires options 210 and 211 for full VVM functionality (Models N9913/14/15C)
• Requires NA4, NA6, or NAX (Model N9912C)

Measure the phase shift and electrical length of a device with option 308 vector voltmeter (VVM). VVM also provides ratio measurements of magnitude and phase of two channels, A/B or B/A. You can use this capability to verify the magnitude and phase differences between multiple signal paths such as in an antenna or phased array.