| Specificationsa, b | ||
| Model | 23BL | 12D |
| Central wavelength (nm) | 1310 ± 20 / 1550 ± 20 | 850 ± 25 / 1300 +50/–20 |
| Spectral widthc (nm) | ≤5 | 50/135 |
| Output power (dBm) | ≥1 / ≥1 | ≥–20 / ≥–20 (62.5/125 µm) |
| Power stabilityd (dB) | ±0.10 | ±0.10 |
| Battery lifee (hours) | 120 | 120 |
| Enables automatic wavelength recognition | Yes | Yes |
| Tone generation | 270 Hz, 1 kHz, 2 kHz | 270 Hz, 1 kHz, 2 kHz |
| Recommended calibration interval (years) | 3 | 3 |
| Warranty (year) | 1 | 1 |
| a. Guaranteed unless otherwise specified. b. All specifications valid at 23 °C ± 1 °C, with an FC connector. c. Root mean square (RMS) for lasers and –3 dB width for LEDs; typical values for LEDs. d. After 15 minutes warmup; expressed as ± half the difference between the maximum and minimum values measured during the period, with an APC connector on the power meter. e. Typical autonomy in Auto mode. | ||
| Size (H × W × D) | 185 mm × 100 mm × 55 mm (7 ¼ in × 4 in × 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 |
| Power supply | 3 AA alkaline batteries |