JDS Uniphase RM3750 ユーザーズマニュアル

RM3 SERIES BACKREFLECTION METER

USER’S MANUAL

 

The absolute accuracy of power measurements made with the RM meter is dependent on the
power level to be measured. The RM meter does not measure power levels below -50 dBm
unless the dark signal from extraneous sources (

I

D

) is stored.

To ensure accurate power measurements below -65 dBm, store 

I

D

 frequently.

The value of 

I

D

 can change with temperature fluctuations.

The RM meter is supplied with a foot pedal for convenient data logging to either a computer or
printer. Data logging operates at a baud rate of 2400.

To use the foot pedal:

1.  Ensure the computer or printer is connected to the RS232C or IEEE 488 (GPIB) port at the

back of the meter.

 

2.  If the foot pedal is not already operational, connect the foot pedal plug to the Log jack on

the rear panel of the meter.

3.  Press the foot pedal. The message “Log” appears on the right-hand side of the front-panel

display, and the most recent measurements made are sent to the computer or printer
through the RS232 serial  or IEEE 488 (GPIB) port.

The messages and symbols displayed by the RM meter are described in Table 7.

RMXXXXB   VERY.Y

Displayed momentarily during the power-up sequence and indicates