Keysight N8976B

Keysight NFA Series Noise Figure Analyzers Service Guide 309
Power Supply/Midplane Troubleshooting
A6 Power Supply Description
+5.1SB 5.1 Volt Standby power supply. 0.5 0.2
+3.35D 3.35 Volt Digital power supply. 6.5 2.0
+3.35D_Sense Remote sense for +3.35 digital supply. -- --
DCOM Digital ground.
Connected to the common ground point inside
the power supply.
-- --
DCOM_Sense Remote sense for DCOM. -- --
PWR_OK Power OK Output. -- --
PS_ONn Power supply turn on input, active low. -- --
ChassisCOM Power supply outer case. Connected to common
ground point inside the power supply.
-- --
Table 10-1 Power Supply Output Signals
Signal Name Description Maximum
Output Current
(Amps)
Test Load
(Amps)