Thanks for the question. Actual calibration needs to be done by the factory, When measuring in dB (which is a relative value) you can tap the REF button to zero out, or set your reference level to Zero. Example, if you are measuring in dBm your transmitter power level is -10 dBm (absolute value), and your receive level is -15 dBm (absolute value), your loss is 5 dB (relative value between the two absolutes). Alternatively, you could measure in dB, at the transmitter and "Zero" the meter by taping REF (telling the meter that -10 dBm is zero). When you measure at the receiver, the meter would read -5 dB. Using the dB measurement saves you from doing the math, but IF you forget to redo the reference on the next measurement, it will skew your results. Hope this helps.
@@VanTekConsulting Thanks for replying! Yes, I've already done that, but I have another Veex powermeter and an Anritsu otdr that have the measurement calibrated and the same, the OLP-38 is measuring 1dbm above and I wanted to make them all the same.
@@MAMTECNOLOGIA If you are saying that the VeEx and the Anritsu (I assume you are using the PM function on the OTDR, or are you shooting a known fiber?) are measuring the same, one possibility is that the connector on the OLP-38 is damaged. Do you have a probe to look at that? I'm not sure of your test bed / process, light source, connectors, etc.. Feel free to give us a ring if you want to talk through this.
@@VanTekConsulting I bought this month a light source an orientek T15M in your description this output is -5Db, it is for this equipment that I am checking the readings
Very Helpful, Thanks for taking the time
Thanks for your information! Could you tell me which keys I press for the calibration of the OLP-38?
Thanks for the question. Actual calibration needs to be done by the factory, When measuring in dB (which is a relative value) you can tap the REF button to zero out, or set your reference level to Zero. Example, if you are measuring in dBm your transmitter power level is -10 dBm (absolute value), and your receive level is -15 dBm (absolute value), your loss is 5 dB (relative value between the two absolutes). Alternatively, you could measure in dB, at the transmitter and "Zero" the meter by taping REF (telling the meter that -10 dBm is zero). When you measure at the receiver, the meter would read -5 dB. Using the dB measurement saves you from doing the math, but IF you forget to redo the reference on the next measurement, it will skew your results.
Hope this helps.
@@VanTekConsulting Thanks for replying! Yes, I've already done that, but I have another Veex powermeter and an Anritsu otdr that have the measurement calibrated and the same, the OLP-38 is measuring 1dbm above and I wanted to make them all the same.
@@MAMTECNOLOGIA If you are saying that the VeEx and the Anritsu (I assume you are using the PM function on the OTDR, or are you shooting a known fiber?) are measuring the same, one possibility is that the connector on the OLP-38 is damaged. Do you have a probe to look at that? I'm not sure of your test bed / process, light source, connectors, etc.. Feel free to give us a ring if you want to talk through this.
@@VanTekConsulting I bought this month a light source an orientek T15M in your description this output is -5Db, it is for this equipment that I am checking the readings
Hello, Are you aware of choosing the attenuators? could you please tell us that?