Keysight N9038A MXE Service Guide 369
Power Supply & Midplane
A6 Power Supply Description
Supply Voltages
The following voltage levels are produced by the A6 Power Supply assembly:
Control Inputs
There are a number of control inputs for the A6 Power Supply assembly. The
ones that you will want to be familiar with are:
POWER_ON_L
is a signal that when pulled low tells the A6 Power Supply assembly to turn on
all of its outputs. This signal comes from the A4 CPU board assembly and is
initiated by pressing the front panel power button.
DITHER
is an AC coupled analog signal going to the supply that is used to frequency
modulate the power supply switching frequency for the purpose of lowering
any power supply related interference. The DITHER signal is generated on the
A7 Midplane board assembly.
Table 12-1
Supply Name Description Referenced To
+32VA +32 Volt Analog Supply ACOM
+15VA +15 Volt Analog Supply ACOM
+15VSB +15 Volt Standby Supply ACOM
+9VA +9 Volt Analog Supply ACOM
+5.1VA +5.1 Volt Analog Supply ACOM
-7VA -7 Volt Analog Supply ACOM
-15VA -15 Volt Analog Supply ACOM
+12VD +12 Volt Digital Supply DCOM
+5.1VD +5.1 Volt Digital Supply DCOM
+5.1VSB +5.1 Volt Standby Supply DCOM
+3.35VD +3.35 Volt Digital Supply DCOM
FAN_P Fan Positive Supply FAN_N
FAN_N Fan Negative Supply FAN_P
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