168 Keysight CXG, EXG, and MXG X-Series Signal Generators Service Guide
Power Supply
Assembly Overview
Assembly Overview
The A1 Power Supply assembly is a switching supply designed with an
automatic line-voltage and frequency selection. The supply has a maximum
total output power draw of 210 watts. The supply converts AC line voltage to
regulated DC voltages. For specifics on the voltage and frequency range that
the power supply is specified to operate at refer to the rear panel of the
instrument or the data sheet.
There is an internal power line fuse that is not replaceable. If the fuse opens,
the power supply must be replaced.
Supply Outputs
All A1 Power Supply outputs, except for the +5.1 VSB (standby supply), are
over-current protected and will not be damaged if a continuous short circuit
occurs.
There is a total of 10 different DC voltages supplied by the A1 Power Supply
assembly, as shown in Table 8-1.
There are no user replaceable components inside the A1 Power
Supply assembly. There are also voltage levels within it that could
be hazardous to your health. As such, the cover on the A1 Power
Supply assembly should NEVER be removed and no probes or
anything else of any kind should ever be inserted into it, whether
there is power applied to it or not.
Table 8-1 A1 Power Supply Assembly DC Voltage Outputs
DC Voltage Referenced To
+32 VA ACOM
+15 VA ACOM
+9 VA ACOM
+5 VA ACOM
-7 VA ACOM
-15 VA ACOM
+12 VD DCOM
+5 VD DCOM
+3.3VD DCOM
+5 VSB DCOM
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