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The HP 8146A is a high-performance optical time domain reflectometer mainframe for installation, field maintenance, and bench applications. Plug-in modules are available for all common wavelengths and single and multimode fibers. Each module can be used as a high-resolution or long-range module (switch-selectable). In less than 7 seconds the HP 8146A will automatically characterize the link with up to 100 reflective and non-reflective events. For documentation purposes, the HP 8146A features an optional built-in printer, 3 1/2-inch floppy disk drive or a memory card reader. Horizontal Parameters; Start km: 0 km to 100 km. Span: 1 km to 200 km. Readout Resolution: 0.1 m, 0.0001 mi, 0.1 ft. Minimum Sample Spacing: 0.5 m. Distance Accuracy: ± 1.5 m for 850 nm. Refractive Index: 1.4000 to 1.6000. Length Unit: km, kft, or miles selectable. Measurement Points: 2000 to 4000, depending on selected measurement span and refractive index. Vertical Parameters; Vertical Scale: 0.20 to 5 dB/div. Readout Resolution : 0.001 dB. Linearity: 0.05 dB/dB typical. Reflectance Range: 20 dB to 60 dB. Reflectance Accuracy: ± 2 dB for reflectances between 20 dB and 40 dB (return loss mode, short-range, 100 ns pulse width). CW Mode (single-mode module); Output Power: > -5 dBm. Stability (15 min, T = constant): ± 0.01 dB after 10 min warmup. Pulse Width: selectable, 5/30/100/300 ns, 1/2/3/10 us, depending on module and distance range mode. Module Wavelengths: 850 ± 10 nm, 1300 ± 10 nm, 1310 ± 20 nm, 1550 ± 20 nm. Options. Opt 001, dc Input. Opt 002, Thermal Printer. Opt 003, 3 1/2-in Floppy Disk Drive. Opt 004, Memory Card Reader.
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