| Specificationsa | ||
| Model | FOT-302 | FOT-302X |
| Power meter portb | Ge | GeX |
| Power range (dBm)c | 10 to —60 | 26 to —50 |
| Range displayed (dBm) | Down to —65 | Down to —50 |
| Number of calibrated wavelengthsd | 10 | 10 |
| Power uncertaintye | ±5 % ± 1 nW | ±5 % ± 1 nW |
| Resolution (dB) | 0.01f | 0.01g |
| Automatic offset nullingh | Yes | Yes |
| Warmup time (s)h, i | 0 | 0 |
| Display units | dB/dBm/W | dB/dBm/W |
| Automatic wavelength recognitionj | Yes | Yes |
| Screen refresh rate (Hz) | 3 | 3 |
| Tone detection (Hz) | 270, 1 k, 2 k | 270, 1 k, 2 k |
| Battery life (hours) (typical) | 260 | 260 |
| Warranty and recommended calibration interval (years) | 3 | 3 |
| Modelk | 23BL | 12D |
| Central wavelength (nm) | 1310 ± 20 / 1550 ± 20 | 850 ± 25 / 1300 + 50/—20 |
| Model | 235BL | |
| Central wavelength (nm) | 1310 ± 20 / 1490 ± 10 / 1550 ± 20 | |
| Spectral width (nm)l | ≤5 | 50/135 |
| Spectral width (nm)l | ≤5 | |
| Output power (dBm) | ≥1/≥1 | ≥—20/≥—20 (62.5/125 μm) |
| Output power (dBm) | ≥1/≥—4.5/≥—3 | |
| Power stability (dB)m 8 h | ±0.1 | ±0.1 |
| Power stability (dB)m 8 h | ±0.1 | |
| Battery life (hours)n | 120 | 120 |
| Battery life (hours)n | 120 | |
| Automatic wavelength recognition | Yes | Yes |
| Automatic wavelength recognition | Yes | |
| Tone generation (Hz) | 270, 1 k, 2 k | 270, 1 k, 2 k |
| Tone generation (Hz) | 270, 1 k, 2 k | |
| Warranty and recommended calibration interval (years) | 3 | 3 |
| Warranty and recommended calibration interval (years) | 3 | |
| a. Guaranteed unless otherwise specified. b. All specifications valid at 1550 nm and 23 °C ± 1 °C, with an FC connector. c. In CW mode; sensitivity defined as 6 x rms noise level. d. Wavelengths: 830 nm, 850 nm, 980 nm, 1300 nm, 1310 nm, 1450 nm, 1490 nm, 1550 nm, 1590 nm and 1625 nm. e. Traceable to national standards; FOT-302X: up to 20 dBm. f. From 10 dBm to —50 dBm. g. From 26 dBm to —35 dBm. h. Power of > —40 dBm for FOT-302, and of > —25 dBm for FOT-302X. i. For ±0.05 dB, from 18 °C to 28 °C. j. At 850 nm, 1300 nm, 1310 nm, 1490 nm, 1550 nm and 1625 nm; power > —50 dBm for FOT-302, and > —40 dBm (typical) for FOT-302X. k. All specifications valid at 23 °C ± 1 °C, with an FC connector. l. rms for lasers and —3 dB width for LEDs; typical values for LEDs. m. After a 15-minute warmup; expressed as ± half the difference between the maximum and minimum values measured during the period, with an APC connector on the power meter. n. Typical autonomy in Auto mode. | ||
| Size (H x W x D) | 185 mm x 100 mm x 55 mm (7 ¼ in x 4 in x 2 1/8 in) |
| Weight | 0.4 kg (0.9 lb) |
| Temperature | Operating: —10 °C to 50 °C (14 °F to 122 °F) Storage: —40 °C to 70 °C (—40 °F to 158 °F) |
| Relative humidity | 0 % to 95 % non-condensing |
| Laser safety | CLASS 1 LASER PRODUCT |
| Standard accessories | User guide, certificate of calibration, instrument stickers in six languages, AC adapter, EUI-XX, connector adapter (FOA-XX), AA batteries (3), wrist strap, alcohol cleaning pads |