ハンドヘルド型光ロステスター
FOT-300

特長

Model	FOT-302	FOT-302X
Power meter port*2	Ge	GeX
Power range (dBm)*3	10 to -60	26 to -50
Range displayed (dBm)	Down to -65	Down to -50
Number of calibrated wavelengths*4	10	10
Power uncertainty*5	±5 % ± 1 nW	±5 % ± 1 nW
Resolution (dB)	0.01*6	0.01*7
Automatic offset nulling*8	Yes	Yes
Warmup time (s)89	0	0
Display units	dB / dBm / W	dB / dBm / W
Automatic wavelength recognition*10	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

Model*11	23BL	12D	235BL
Central wavelength (nm)	1310 ± 20 1550 ± 20	850 ± 25 1300 + 50/.20	1310 ± 20 1490 ± 10 1550 ± 20
Spectral width (nm)*12	≤ 5	50 / 135	≤ 5
Output power (dBm)	≥ 1 / ≥ 1	≥ -20 / ≥ -20 (62.5/125 μm)	≥ 1 / ≥ -4.5 / ≥ -3
Power stability (dB)13 88	± 0.1	± 0.1	± 0.1
Battery life (hours)*14	120	120	120
Automatic wavelength recognition	Yes	Yes	Yes
Tone generation (Hz)	270, 1 k, 2 k	270, 1 k, 2 k	270, 1 k, 2 k
Warranty and recommended calibration interval (years)	3	3	3

※1

Guaranteed unless otherwise specified.
※2

All specifications valid at 1550 nm and 23 °C ± 1 °C, with an FC connector.
※3

In CW mode; sensitivity defined as 6 x rms noise level.
※4

Wavelengths: 830 nm, 850 nm, 980 nm, 1300 nm, 1310 nm, 1450 nm, 1490 nm, 1550 nm, 1590 nm and 1625 nm.
※5

Traceable to national standards; FOT-302X: up to 20 dBm.
※6

From 10 dBm to —50 dBm.
※7

From 26 dBm to —35 dBm.
※8

Power of > —40 dBm for FOT-302, and of > —25 dBm for FOT-302X.
※9

For ±0.05 dB, from 18 °C to 28 °C.
※10

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.
※11

All specifications valid at 23 °C ± 1 °C, with an FC connector.
※12

rms for lasers and —3 dB width for LEDs; typical values for LEDs.
※13

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.
※14

Typical autonomy in Auto mode.

Size (H x W x D)	190 mm x 100 mm x 62 mm	(7 1/2 in x 4 in x 2 1/2 in)
Weight	0.48 kg	(1.1 lb)
Relative humidity	0 % to 95 % non-condensing

Size (H x W x D)	190 mm x 100 mm x 62 mm	(7 1/2 in x 4 in x 2 1/2 in)
operating	-10 °C to 50 °C	(14 °F to 122 °F)
storage	-40 °C to 70 °C	(-40 °F to 158 °F)

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