Agilent Technologies E4400-90246

Chapter 1 87

Instrument Messages

Status (ADC Align Failure) status bit only, no message

The alignment routine was unable to align the analog-to-digital converter

(ADC).

Status Align Now All Needed (Align Needed)

The instrument requires complete alignment. Press System, Alignments,

Align Now, All. On all Agilent Technologies ESA spectrum analyzer models

except Agilent Technologies E4401B and E4411B, you must connect the

AMPTD REF OUT to the INPUT with the appropriate cable to perform this

alignment. For Agilent TechnologiesE4401B and E4411B only: disconnect

any signals from the INPUT prior to performing this procedure. If this

message recurs, load defaults (System, Alignments, Load Defaults) and then

perform Alignment Now, All.

Status Align Now RF Needed (Align Now RF Needed)

The instrument requires RF alignment. Press System, Alignments, Align

Now, RF (EXT Cable). On all Agilent Technologies ESA spectrum analyzer

models except Agilent Technologies E4401B and E4411B, you must

connect the AMPTD REF OUT to the INPUT with the appropriate cable to

perform this alignment. For Agilent TechnologiesE4401B and E4411B

only: disconnect any signals from the INPUT prior to performing this

procedure.

Status Align RF Skipped (Align RF Skipped)

The RF alignment has been skipped because a 50 MHz signal was detected

at the INPUT; alignment will resume when the 50 MHz signal is removed.

The alignment will not work when there is too much input power at

50 MHz. The instrument may not continue to measure properly. To remove

the message, remove the 50 MHz inpu t signal, then perform an Align Now,

RF. Press System, Alignments, Align Now, RF. On all Agilent Technologies

ESA spectrum analyzer models except E4401B and E4411B, you must

connect the AMPTD REF OUT to the INPUT with the appropriate cable to

perform this alignment. For Agilent Technologies E4401B and E4411B

only: disconnect any signals from the INPUT prior to performing this

procedure.

If this message occurs and you are going to make a measurement near

50 MHz, select System, Alignments, Auto Align , and All but RF.

Status Align RF Skipped, Align signal amplitude too low

The RF alignment has been skipped because the calibration output power

is too low.