Retrofitting Options 4
Keysight 53210A/53220A/53230A Assembly Level Service Guide 213
To Retrofit the 53210A (Channel 1) or 53220A/53230A
(Channels 1/2) Rear Panel Inputs (Option 201)
Option 201 rear panel channel 1/2 parts
Preliminary steps
1 Remove the instrument cover as follows:
2 To remove the counter handle, rotate the handle to the vertical (90 degree)
position and pull outward on the two side arms.
Item Keysight part no. Qty.
RF input cable 53200-61611 2
Cable clamp 1400-0116 4
Lock washer 2190-0699 2
Hex Nut 2940-0256 2
Each single channel uses half of the listed quantities.
Before proceeding with the installation, follow all the ESD steps as outlined in
the section titled Do This first under the Introduction at the beginning of Chapter
4 of this service guide.
Refer as necessary to the illustrations in the section titled “To Remove the Cover
and Rear Bezel” on page 185 of this guide.
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