Preventing Esd Damage With A15 Diode Limiter - Agilent Technologies Infinium DCA 86100A Service Manual

Preventing ESD Damage with A15 Diode Limiter

Service Note 86100C-04
Description 86100C instruments built after June 1, 2006, include the A15 Diode Limiter. Adding A15 to the
input of A14 improves reliability, because the A14 Counter Assembly on 86100C Option 001
instruments is susceptible to electrical overstress through the front-panel Trigger port. Add A15
only in situations where A14 has been damaged through electrical overstress.
Serial Numbers Install on 86100C instruments having the following serial numbers:
• MY45031040 and below (except MY45031048 & MY45031049)
• SG45030118 and below
Required Parts A15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N9355-66002
Cable, SW2 to A15P1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86100-20082
Procedure
1 Remove the instrument cover, calibration access plug, rear-panel feet, and side handles.
2 Remove the A13/A14 assemblies as shown in
Counter Assembly (Option 001)" on page
Figure 6-11. A13/A14 Assemblies
3 Remove the existing cable W31, part number 86100-20053, from the A14J2 INPUT and discard.
See
4 Connect the new W31, part number 86100-20082, to A14J2 INPUT. The W32 cable remains
connected to the A14J3 OUTPUT.
Figure 6-12.
Preventing ESD Damage with A15 Diode Limiter
"To Replace the A13 Acquisition and 86100C A14
7-45. Position A13/A14 as shown in
Instrument Modifications
Figure 6-11.
6-13