Agilent Technologies HP 3325B Bedienerhandbuch Seite 184

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Chapter 4 Retrofitting Options
To Retrofit A5 DC Power Input Assembly (Option 002)
4-10 Assembly-Level Service Guide
4
13 Note that you will have to assemble your own dc power cable using 18 AWG
connecting wires and a three-pin Agilent E9640A XLR (female) connector plug,
shown in Figure 4-1E.
Figure 4-1E. Three-Pin XLR Plug Pinouts (Front View)
14 From the rear of the XLR plug, connect the external power supply’s supply-side
wire to pin 2 of the XLR plug. Connect the external power supply’s return
(ground) wire to pin 1, and the chassis ground wire to pin 3 of the XLR plug.
15 Observing the correct polarity, attach the other ends of the wires to a dc source
(+10 to +32V dc) to operate the Counter.
This completes the DC Power Input Assembly (Option 002) retrofit procedure.
2
1
3
d
c-supply ( )
dc return (ground)
( )
chassis
ground
( )
Cable wire
s
connecte
d
to this en
d
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