Noyes OPM4 4D
OPM 4 Optical Power Meter
The OPM 4 optical power meter may be used to measure optical power in Premises,
Telco, or Broadband fiber optic networks. When used with an LED or Laser light source,
the OPM 4 also measures insertion loss of multimode or single-mode cables. The OPM 4
offers Wave ID, automatic wavelength identification and switching, when used with the
OLS 1 Dual or OLS 2 Dual or OLS 4 with Wave ID feature. Multiple test Tone detection is
provided for fiber identification. The OPM 4 stores optical references for each calibrated
wavelength. An easy to read Dual Wavelength LCD display with Backlight shows measured
power [dBm or µW] or insertion loss [dB], calibrated wavelengths, tone signal [Hz], wavelength ID, and the battery charge status. In addition to being powered by two AA alkaline,
the OPM 4 can be powered by optional AC adapter and/or rechargeable NiMH battery
pack. The OPM 4 optical input port accepts Noyes thread-on style adapter caps. Adapter
caps are required for operation and must be ordered separately. The OPM 4 is fully N.I.S.T.
• Rugged, handheld, lightweight
• Multimode or single-mode applications
• Premises (Ge), Telco (InGaAs), and
Broadband (+26 dBm) models
• Wave ID - automatic wavelength identification and switching
• Passive Optical Networks (PON) testing
• Dual Wavelength testing
• 270 Hz, 330 Hz, 1 kHz, and 2 kHz Tone
• Large LCD with Backlight
• Power measurements in dBm or µW;
insertion loss in dB
• Reference power level storage
• AA alkaline, optional rechargeable NiMH
battery pack
• Battery Gauge
• N.I.S.T traceable
OPM 4-1D
OPM 4-2D
OPM 4-3D
OPM 4-4D
wavelengths (nm)
660, 780,
850, 1300,
1310, 1550
850, 1300,
1310, 1550,
850, 980,
1310, 1490, 1550,
Detector type
Silicon (Si)
Germanium (Ge)
Filtered InGaAs
Measurement range (dBm)
+6 to -70
+6 to -60
+6 to -70
+26 to -50
Tone detect range (dBm)
+6 to -45
Wavelength ID range (dBm)
+6 to -50
+6 to -45 for 850nm
+6 to -30
+6 to -25 for 850nm
+6 to -50
+6 to -45 for 850nm
+6 to -30
+6 to -25 for 850nm
Accuracy (dB)*
± 0.25
Resolution (dB)
Measurement units
dB, dBm, µW
2 x AA batteries, optional NiMH
300 hours
Battery life (2 x AA)
Operating temperature
-10 to 50°C, 90% RH (non-condensing)
Storage temperature
-30 to 60°C, 90% RH (non-condensing)
Size (H x W x D)
5.5 x 3.2 x 1.5 in (14.0 x 8.1 x 3.8 cm)
0.58 lb (0.26 kg)
*Accuracy measured at 25ºC and -10 dBm per N.I.S.T. standards.
All specifications at 25°C
Ordering Information
All OPM 4 models
Carry case, AA batteries, protective rubber boot, and manual.
Optical light sources and optical power meters can be packaged together as a kit.
Test & Inspection
© 2004, AFL Telecommunications, all rights reserved. OPM4-30-2000 Revision A, 5.06.05
Specifications are subject to change without notice.
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