Agilent Technologies announced the latest addition to its extensive optical power meter portfolio. The two-channel N7747A and four-channel N7748A bring the high sensitivity of the 81634B sensor module to the compact multichannel N77 platform, with updated memory size and data transfer speed.
The meters enable engineers to make parallel multiport measurements and monitor weak signals and small signal changes with high precision in, for example, communications or sensing applications. They can detect power levels down to -110 dBm and log data at intervals down to 25 μs with up to 1 million points per channel. An equally large data buffer supports simultaneous measurement and data transfer.
With these features and specifications, the meters make it easy for engineers to monitor signal stability and transient events for long periods. Up to eight power meter channels fit in a single 19-inch rack-height unit. Each channel also has a front-panel BNC connector that delivers analog output voltage proportional to the measured signal.
Like the faster N7744A and N7745A, these new power meters can be used with N77xx viewer software for simple control and reading, and are programmable with the same set of SPCI commands as the rest of Agilent’s optical power meter portfolio. The latest version of the popular 816x VXI plug-and-play driver also adds support for these products. Computer interfaces are provided for USB 2.0, LAN and GPIB.
In addition to high sensitivity, low noise and solid stability, the N7747A and N7748A also provide high relative accuracy like the 81634B modules, with extremely low polarisation dependence and spectral ripple as well as specified linearity. This combines to make these power meters an excellent choice in setups for measuring insertion loss and lowest PDL in passive optical components.
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