| Newtons4th | N4L | |
| 增益相位测试仪 | ±5 millidegrees | |
| PSM1700 | Frequency Response Analyzer 10μHz - 1MHz 增益相位测试仪 |
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| PSM1735 | Frequency Response Analyzer 10μHz - 35MHz 增益相位测试仪 | |
| PSM2200 | Frequency Response Analyzer 10μHz – 2.4MHz 增益相位测试仪 |
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| PSM2201 | Frequency Response Analyzer 10μHz – 2.4MHz 增益相位测试仪 |
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