HP ESA-L1500A, Руководство пользователя и калибровки

Страница: 57 / 326

56 Chapter 3
Troubleshooting
Error Messages
Align RF skipped No align signal
Indicates that an Auto
Align of the RF Assembly was not performed because the
instrument’s internal alignment signal was not detected or was
invalid. This could be due to a problem with the accuracy or stability
of the external 10 MHz reference, if one is present. (U) or (H)
Alignment Needed
Occurs after a ‘Load Defaults’ of alignment
data. A complete alignment must be performed. Press
Align Now
,
All
.
(U) or (M)
Atten auto set to 15 dB
Indicates that an input signal has
been detected which is of sufficient level to force the input
attenuator to be auto-coupled at 15 dB. No operator intervention is
required. If the signal level is reduced the attenuator will stay at 15
dB.
This overload protection occurs at an input power level of 13 dBm
±
7
dBm (nominal), or 68 dBmV
±
7 dBmV for Option 1DP, when the
input attenuation is auto-coupled and set to <15 dB. To return to the
original measurement setup, reduce the input signal level and press
Amplitude
. Then press
Attenuation Auto Man
twice, to toggle back to
Auto. (U) or (M)
When operating remotely, the status bit should be monitored for this
condition to avoid incorrect measurement results.
Cannot reach N dB points
Indicates that the number of dB
specified for the N dB PTS function is greater than the distance of
the signal peak from the spectrum analyzer noise floor or peak
threshold. (U)
CMD ERR:_ _ _
The specified programming command is not
recognized by the spectrum analyzer. (U)
Configuration error: Front Panel/Display ID not
recognized
At power on an error was encountered identifying the
Front Panel/Display assembly. (H)
Configuration error: Option ID not recognized
The
hardware for an option was identified in an instrument that does not
support it. (H)
Configuration error: RF Assembly ID not recognized
At
power on an error was encountered when identifying the RF
Assembly. (H)
Configuration error: RF-Source Impedance mismatch
A
power up check determined that the RF Assembly and optional
Tracking Generator Assembly do not have the same impedance. (H)
Data Memory Full<data type>:_ _ _
An attempt was made to
save a file of <data type> to memory, however the memory space is
full. (U)