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CHK-NON-F Noninsertable check standard SMA(f-f)

The TA431 CHK-NON-F is a check standard for use with a noninsertable DUT, with a female to female port that can be used to validate the accuracy of a network analysis test setup and its calibration before and during or after measurements are made. Akin to the Beatty line, each check standard is a short length of mismatched line (75 mm of 25 Ω) with a predictable, smooth and stable mismatch and transmission characteristic that spans the frequency range of the PicoVNA 106 and 108. These devices validate system measurement accuracy in the presence of high and varying mismatch and thus present a demanding validation on which to base confidence in a setup.

A comparison utility is provided in the PicoVNA 2 software to evaluate the comparison against a combination of specified measurement uncertainties for the device, test leads and instrument. Each check standard is supplied with Touchstone measurement data on USB memory. The data is traceable via PC3.5 standards to national standards. The supplied Touchstone measurement data is compatible with and can be used to manually validate a measurement of any manufacturer’s VNA.

Port connectors	Parameter	Min	Max	Impedance (Ω)	Bandwidth (GHz)
Port 1: SMA female	Return loss	< –30 dB	> –6 dB	25	8.5
Port 2: SMA male	Return loss	> –0.2 dB	< –1.9 dB	25	8.5

Supports all S-parameters and noninsertable, known and unknown through calibration modes.

^£599

Specifications

Device	Bandwidth	Return loss	Insertion loss	Comment
TA431	0.3 to 8500 MHz	< –30 dB to > –6 dB	> –0.2 dB to < –1.9 dB	Formed by 75 mm of 25 Ω mismatched line

Level and frequency range		Reflection mag / phase	Transmission mag / phase
–15 dB to 0 dB	< 2 MHz	0.99 dB / 11.3°	0 dB to +6 dB	0.57 dB / 8.5°
–15 dB to 0 dB	> 2 MHz	0.71 dB / 5.7°	0 dB to +6 dB	0.28 dB / 2.8°
–25 dB to –15 dB	< 2 MHz	1.13 dB / 14.1°	–40 dB to 0 dB	0.42 dB / 2.8°
–25 dB to –15 dB	> 2 MHz	1.41 dB / 8.5°	–40 dB to 0 dB	0.14 dB / 1.4°
–30 dB to –25 dB	< 2 MHz	4.24 dB / 28.3°	–60 dB to –40 dB	0.71 dB / 11.3°
–30 dB to –25 dB	< 2 MHz	3.54 dB / 21.2°	–60 dB to –40 dB	0.42 dB / 5.7°
			–80 dB to –60 dB	2.83 dB / 21.2°
			–80 dB to –60 dB	2.12 dB / 17.0°