Keysight N8976B

308 Keysight NFA Series Noise Figure Analyzers Service Guide
Power Supply/Midplane Troubleshooting
A6 Power Supply Description
Power Supply Output Signals
Table 10-1 describes the output signals from the Power Supply assembly.
Table 10-1 Power Supply Output Signals
Signal Name Description Maximum
Output Current
(Amps)
Test Load
(Amps)
+32A 32 Volt Analog power supply. 1.8 0.5
+15A 15 Volt Analog power supply 4.25 1.3
+15SB 15 Volt Standby power supply -- --
+9A 9 Volt Analog power supply 4.0 1.4
+9A_Sense
+5.2A 5.2 Volt Analog power supply 11.5 3.7
+5.2_Sense
-7A -7 Volt Analog power supply 4.5 1.5
-7A_Sense
-15A -15 Volt Analog power supply 1.5 0.5
ACOM Analog Ground. Connected to common ground
inside power supply.
-- --
ACOM_Sense Remote sense for analog ground. -- --
PS_Faultn Power supply fault output, active low. -- --
PS_Temp Analog temperature output.
Control element for fan speed.
-- --
Line_Trig Line Trigger Output. -- --
Dither Dither input from A7 Midplane for switching
frequency modulation.
-- --
Temp_Sense External temperature input for fan speed
control.
-- --
Offn Off input, active low. Used to turn off all
non-standby supplies.
-- --
Fan_P Positive fan power supply. 1.0 0.5
Fan_N Negative fan power supply. 1.0 0.5
+12D 12 Volt Digital power supply. 8.0 2.6
+5.1D 5.1 Volt Digital power supply. 8.5 2.7
+5.1D_Sense Remote sense for +5.1 digital supply. -- --