6-39
Performance Tests – Option 011
12. Receiver Magnitude Dynamic Accuracy
20 Repeat Step 7 through Step 12 to measure the receiver R input impedance.
In Case of
Difficulty
WARNING These servicing instructions are for use by qualified personnel only.
To avoid electrical shock, do not perform any servicing unless you are
qualified to do so.
WARNING The opening of covers or removal of parts is likely to expose
dangerous voltages. Disconnect the instrument from all voltage
sources while it is being opened.
WARNING The power cord is connected to i nternal capacitors that may remain
live for five seconds after disconnecting the plug from its power
supply.
1Check your test setup for damage or excessive wear of the i nput connectors.
2Impedance mismatch may also be caused by the samplers, or the semi-rigid
cables connecting the A4/A5/A6 sampler mixer assemblies to the analyzer front
panel Type-N connectors. Check for damaged semi-rigid cables. If no damage
is apparent at the input connectors, try interchanging the sampler assemblies.
If the problem goes away, the sampler which you just swapped is defective. If
the problem still exists, suspect the path from the Type-N connector input to
the sampler assembly.
3Refer to the Agilent8753 D Option 011 Service Guide for more
troubleshooting information.
12. Receiver Magnitude Dynamic Accuracy
Perform this procedure to measure the magnitude dynamic accuracy for each
input test port.