Return Loss Measurement Getting Started With Return Loss
140 Agilent 8163A Lightwave Multimeter, Agilent 8164A Lightwave Measurement
System, & Agilent 8166A Lightwave Multichannel System, Fourth Edition
CAUTION Agilent Technologies supplies patchcords with a Diamond HMS-10/Agilent/HRL
high return loss connector on one end. These patchcords are necessary so that the
connector at the output is not damaged. The full range of patchcords available are
described in Table 3 on page 136.
13 Attach the high return loss connector of the reference cable to the Output. The
high return loss connector on these cables is the connector with the orange
sleeve. For best results and higher repeatability, fix the cable.
14 Record the [Rl] value as the return loss reference value for this cable. Attach a
label to this newly-calibrated Reference Cable for future use.
Calibrating the HP 81534A Return Loss
Module using a Reference Cable
Measuring the Reflection Reference using a Reference
Cable
1 Attach the source to the HP 81534A Input as shown in Figure 93. Attach the
high return loss connector of the reference cable to the Output. The high return
loss connector on these cables is the connector with the orange sleeve. For best
results and higher repeatability, fix the cable.
2 Press [Menu], the menu appears.
3 Move to <FPDelta>, set the value to 0.000, and press Enter.
4 Move to <RLref> and make sure that the displayed value is correct. If it is not,
set <RLref> to the return loss value of the reference cable you are using.
5 Press [Menu]. Move to <Reflectance Calibration> and press Enter. The
instrument measures the power reflected by the component. The <RL> value
changes to the same value as entered for <RLref>.
Figure 93 Measuring the Return Loss of the Reference Cable
81534A
Laser
Source
8163A Lightwave Multimeter
Agilent 81101AC
Agilent 81109AC
Reference Cable
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