Keysight Technologies X Series Service Manual page 235

Front End Control Troubleshooting
A15 Front End Control Description
Standard RF Assemblies Controlled by the A15:
— A9 Input Attenuator A (4 dB total for options 503, 507, 513, and 526, 10 dB
— A10 Input Attenuator B (66 dB total for options 503, 507, 513, and 526, 60
— A11 Low Band Switch
— A12 YIG Tuned Filter
— A13 RF Front End Assembly
A15 On Board Circuits:
— RF Burst Trigger (When set to Relative Trigger or when center frequency is
— YTF Tune Ramp
— Preselector Tune Out (Provides output voltage, not specified, reserved for
— Mixer Bias
— Amplifier Bias
— Switch Control
— Sweep Ramp (reserved for future use)
Refer to
choices of A15 assemblies.
Keysight N9010A EXA Service Guide
total for options 532 and 544)
dB total for options 532 and 544)
< 300 MHz.)
future use)
Table 6-1 for details regarding which options are supported by the two
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