| Singlemode configurations | FTBx-3500-B (without power monitoring); FTBx-3500-BI (with power monitoring) |
| Fiber type (µm) | FTBx-3500-B: 9/125; FTBx-3500-BI: 9/125 |
| Wavelength range (nm) | FTBx-3500-B: 1250 to 1650; FTBx-3500-BI: 1250 to 1650 |
| Maximum attenuation b (dB) | FTBx-3500-B: ≥ 65; FTBx-3500-BI: ≥ 65 |
| Insertion loss c, d (dB) | FTBx-3500-B: Typical 1.0, Maximum 1.5; FTBx-3500-BI: Typical 1.5, Maximum 2.2 |
| Attenuation setting resolution (dB), typical | FTBx-3500-B: 0.002; FTBx-3500-BI: 0.002 |
| Attenuation linearity e (dB) | FTBx-3500-B: ±0.1; FTBx-3500-BI: ±0.1 |
| Attenuation repeatability f (dB), typical | FTBx-3500-B: ±0.01; FTBx-3500-BI: ±0.01 |
| Spectral uniformity, 1510 nm to 1605 nm g (dB) | FTBx-3500-B: ±0.05; FTBx-3500-BI: ±0.05 |
| Spectral uniformity, 1450 nm to 1630nm g (dB) | FTBx-3500-B: ±0.09; FTBx-3500-BI: ±0.09 |
| Power meter linearity h (dB) | FTBx-3500-B: N/A; FTBx-3500-BI: ±0.03 |
| Power setting repeatability f (dB), 2σ | FTBx-3500-B: N/A; FTBx-3500-BI: ±0.035 |
| PDL i (dB) peak-to-peak | FTBx-3500-B: 0.15; FTBx-3500-BI: 0.2 |
| Return loss c, j (dB), typical | FTBx-3500-B: 60; FTBx-3500-BI: 60 |
| Max. input power (dBm) | FTBx-3500-B: 23; FTBx-3500-BI: 23 |
| Transition speed (ms), typical k | FTBx-3500-B and FTBx-3500-BI: 1 dB ≤ 160; 10 dB ≤ 515 |
| Shutter isolation (dB), typical | FTBx-3500-B: ≥ 100; FTBx-3500-BI: > 100 |
| Multimode configurations | FTBx-3500-C, FTBx-3500-D (without power monitoring); FTBx-3500-CI, FTBx-3500-DI (with power monitoring) |
| Fiber type (µm) | FTBx-3500-C, D: 50/125, 62.5/125; FTBx-3500-CI, DI: 50/125, 62.5/125 |
| Wavelength range (nm) | FTBx-3500-C, D: 700 to 1350; FTBx-3500-CI, DI: 700 to 1350 |
| Maximum attenuation (dB), typical | FTBx-3500-C, D: ≥ 60; FTBx-3500-CI, DI: ≥ 60 |
| Insertion loss c, d (dB) | FTBx-3500-C, D: Typical 1.3, Maximum 2.0; FTBx-3500-CI, DI: Typical 1.5, Maximum 3.0 |
| Attenuation setting resolution (dB), typical | FTBx-3500-C, D: 0.002; FTBx-3500-CI, DI: 0.002 |
| Attenuation linearity e (dB) | FTBx-3500-C, D: ±0.1; FTBx-3500-CI, DI: ±0.1 |
| Attenuation repeatability f (dB), typical | FTBx-3500-C, D: ±0.01; FTBx-3500-CI, DI: ±0.01 |
| Power meter linearity l (dB) | FTBx-3500-C, D: N/A; FTBx-3500-CI, DI: ±0.03 |
| Power setting repeatability f (dB), 2σ | FTBx-3500-C, D: N/A; FTBx-3500-CI, DI: ±0.035 |
| Return loss c, j (dB), typical | FTBx-3500-C, D: 40; FTBx-3500-CI, DI: 40 |
| Max. input power (dBm) | FTBx-3500-C, D: 20; FTBx-3500-CI, DI: 20 |
| Transition speed (ms), typical k | FTBx-3500-C, D and FTBx-3500-CI, DI: 1 dB ≤ 160; 10 dB ≤ 515 |
| Shutter isolation (dB), typical | FTBx-3500-C, D and FTBx-3500-CI, DI: > 100 |
| a. At 23 °C ± 1 °C. b. At 1550 nm and below. c. Measured at 1310 nm and 1550 nm for singlemode units, measured at 850 nm for multimode units. d. Excluding connectors. e. Measured at 1310 nm and 1550 nm (up to 40 dB) for singlemode units and at 850 nm and 1300 nm (up to 45 dB) for multimode units, with non-polarized light. f. Up to 40 dB attenuation. g. For 20 dB attenuation, relative to 0 dB attenuation. h. At 1550 nm, after a 30-minute warm-up and an offset nulling, for an input power between 20 dBm and –40 dBm. i. Up to 20 dB attenuation at 1550 nm. j. For FC/APC connectors. k. Including platform processing time. l. At 1300 nm, after a 30-minute warm-up and an offset nulling, for an input power between 17 dBm and –40 dBm. | |
| Size (H x W x D) | 25 mm x 159 mm x 175 mm (1 in x 6 1/4 in x 6 7/8 in) |
| Weight | 0.67 kg (1.47 lb) |
| Temperature, operating | 0 °C to 40 °C (32 °F to 104 °F) |
| Temperature, storage | –40 °C to 70 °C (–40 °F to 158 °F) |
| Relative humidity | 0 % to 80 % non-condensing |
| Instrument drivers | IVI drivers and SCPI commands |
| Remote control | With LTB-8: GPIB (IEEE 488.1, IEEE488.2) and Ethernet |
| Standard accessories | User guide, certificate of compliance and certificate of calibration |