Hi! i am using HP8563A spectrum analyzer with HP 8340A sweeper.
spectrum analyzer shows the err 317 and err334 in the right bottom corner of the display and its not showing any output. Is there any one who can tell me how can i make it work?
Best regards:
Adnan
spectrum analyzer shows the err 317 and err334 in the right bottom corner of the display and its not showing any output. Is there any one who can tell me how can i make it work?
Best regards:
Adnan
I looked up these errors in the service guide for you:
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317 FREQ ACC Main coil coarse DAC at limit.
These messages indicate that the YTO main coil coarse DAC (ERR 317)
or fine DAC (ERR 318) is at its limit. If error codes 300 or 301 are not
present, a hardware problem exists in the YTO loop but the loop can
still acquire lock. Refer to Chapter 10, “Synthesizer Section,†to
troubleshoot the YTO PLL. The ADC circuit on the A3 interface
assembly may also cause this error.
The main coil coarse DAC is set to bring YTO ERR close enough to 0 volts for the main coil fine DAC to bring YTO ERR to exactly 0 volts. ERR 317 is set if the main coil coarse DAC is set to one of its limits before bringing YTO ERR close enough to 0 volts.
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334 LO AMPL First LO distribution amplifier is unleveled.
This error often requires troubleshooting the A14 frequency control
assembly (synthesizer section), the A7 LO distribution amplifier, or the
ADC circuits.
Error 334 may be displayed if the front-panel LO OUTPUT is not
terminated in 50 ohms. This error is usually accompanied by error codes 300 or 301. ERR 301 YTO UNLK is cleared once ERR 334 has been cleared. Check the output of the A11 YTO with the jumper on A14J23 in the TEST
position. The YTO power output should be between +9 and +13 dBm. If the YTO is working properly, refer to “LODA Drive†on page 611. The LODA AGC voltage is monitored by the ADC. ERR 334 is set if LODA AGC is outside of its prescribed limits.