Chapter 6 305
General Troubleshooting
System Analyzer Programming Errors (100 to 150)
309 FREQ ACC Offset oscillator pretune DAC not within prescribed
limits at high frequency. The offset oscillator pretune
DAC is set to provide a frequency less than 204 MHz
while the PLL is programmed for 204 MHz. ERR 309 is
set if XFRSENSE is greater than +5 V (it should be at
the negative rail). This error is not applicable to HP
8560 E-series or EC-series spectrum analyzers. If it
occurs in an HP 8560 E-series or EC-series spectrum
analyzer, suspect a problem with the model number
identification in the spectrum analyzer firmware.
310 FREQ ACC Main roller pretune DAC set to 255. The main roller
pretune DAC is set to 5, causing MAINSENSE to go to
the positive rail. The DAC is incremented until
MAINSENSE changes polarity. ERR 310 is set if the
DAC is set to 255 before MAINSENSE changes to a
negative polarity. This error is not applicable to HP
8560 E-series or EC-series spectrum analyzers. If it
occurs in an HP 8560 E-series or EC-series spectrum
analyzer, suspect a problem with the model number
identification in the spectrum analyzer firmware.
311 FREQ ACC Main roller pretune DAC set to 255. The main roller
pretune DAC is set to 5, causing MAINSENSE to go to
the positive rail. The DAC is incremented until
MAINSENSE changes polarity. ERR 311 is set if the
DAC is set to 255 before MAINSENSE changes to a
negative polarity. This error is not applicable to HP
8560 E-series or EC-series spectrum analyzers. If it
occurs in an HP 8560 E-series or EC-series spectrum
analyzer, suspect a problem with the model number
identification in the spectrum analyzer firmware.
312 FREQ ACC Unable to adjust MAINSENSE to 0 volts using the fine
adjust DAC. The coarse adjust and fine adjust DAC are
used together to set MAINSENSE to 0 volts with the
loop opened. ERR 312 is set if the fine adjust DAC
cannot bring MAINSENSE to 0 volts. This error is not
applicable to HP 8560 E-series or EC-series spectrum
analyzers. If it occurs in an HP 8560 E-series or
EC-series spectrum analyzer, suspect a problem with
the model number identification in the spectrum
analyzer firmware.
313 FREQ ACC Error in LO synthesis algorithm. ERR 313 is set if a
combination of sampler oscillator and roller oscillator
frequencies could not be found to correspond to the
required YTO start frequency. Contact the factory. This
error is not applicable to HP 8560 E-series or EC-series
spectrum analyzers. If it occurs in an HP 8560 E-series
or EC-series spectrum analyzer, suspect a problem with
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