Keysight Technologies N5261A, User'S And Service Manual

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Keysight N5261/62A User’s & Service Guide 41
Installation & System Operation
9. Select or clear the
"
Route PNA RF to rear panel
'
RF OUT
'
” check box as
indicated in Table 1-4 on page 13 or Table 1-5 on page 14 .
10. Set the ALC mode according to the following information:
For most applications the ALC mode should be on “Enable Test Set RF
ALC” box checked. For this condition “Max Power Limit at Multiplier’s RF
IN” is automatically set to 11 dBm. The hardware ALC’s in the test set
provide a nominal 11 dBm power level at the RF inputs to the extender
modules. This applies to both the RF and LO inputs. A nominal cable loss
between the test set and extender modules is assumed.
If the ALC mode “Enable Test Set RF ALC” is off, the max power may be set
by the user in the “Max Power Limit at Multiplier’s RF IN” dialog box. If the
user adjusts the analyzer’s RF power, the RF power into the
millimeter-wave modules will change, but will not exceed the specified
max power in the dialog box. It is recommended that ALC “Enable Test Set
RF ALC” be turned off in Pulse mode. Without ALC the power control is
less accurate.
11. Select OK. The analyzer will preset for millimeter operation after you
select OK in the next dialog window.
Figure 1-28 Millimeter System Selections
Select the “Standard PNA” configuration to return to normal PNA operation
without the heads.