E8257D/67D, E8663D PSG Signal Generators Service Guide 109
Troubleshooting
Troubleshooting Unlevels
— Set Stop Frequency to 3.2 GHz
— Set Number of Points to 500 (skip this step if using ramp
sweep)
Spectrum Analyzer:
— Set Start Frequency to 225 kHz
— Set Stop Frequency to 3.25 GHz
— Set Reference Level to +30 dBm
— Set Display to Max Hold
b. Connect the RF output of the signal generator to the spectrum
analyzer. Measure and record the minimum power level.
c. Set the signal generator and spectrum analyzer start/stop
frequencies to the next start/stop frequencies in Table 1-14. Repeat
step b above.
d. If any of the frequency ranges do not produce power levels ≥ the
maximum leveled power shown in the tables below, set the signal
generator to the frequency with the lowest power level and measure
the power with a power meter. If the power level is low, troubleshoot
the RF path before proceeding.
Table 1-14
Signal Generator Spectrum Analyzer
Start Stop Start Stop
3.2 GHz 20 GHz 3.15 GHz 20 GHz
20 GHz Max. Freq. 20 GHz Max. Freq.
Table 1-15 E8257D Maximum Leveled Power (dBm)
a
Frequency 20 GHz Models 40 GHz Models 50 & 67 GHz Models
Std. 1EA/
1EU
1E1 1E1+
1EA/
1EU
Std. 1EA/
1EU
1E1 1E1+
1EA/
1EU
Std. 1EA/
1EU
1E1 1E1+
1EA/
1EU
250 kHz to 3.2 GHz +13 +16 +11 +15 +9 +15 +7 +14 +5 +14 +3 +13
250 kHz to 3.2 GHz
w/UNW
+11 +11 +10 +10 +9 +10 +7 +9 +5 +9 +3 +8
250 kHz to 3.2 GHz
w/1EH
b
+13 +13 +11 +12 +9 +12 +7 +11 +5 +11 +3 +10
250 kHz to 3.2 GHz
w/UNW + 1EH
b
+10 +10 +9 +9 +9 +9 +7 +8 +5 +8 +3 +7