Keysight 53210A/53220A/53230A 350 MHz Universal Frequency
Counter/Timer
Assembly Level Service Guide
201
4 Retrofitting Options
Introduction 202
To Retrofit Ultra-High Stability Timebase (Option 010) 204
To Retrofit the GPIB Connector 205
To Retrofit the Internal Battery DC Power (Option 300) 207
To Retrofit the 53210A (Channel 1) or 53220A/53230A (Channels 1/2) Rear
Panel Inputs (Option 201) 213
To Retrofit the 53210A Channel 2 Front Panel Input (Option 106 or Option 115,
plus Front Panel Option 202) 217
To Retrofit the 53210A Channel 2 Rear Panel Input, 6.0 GHz (Option 106) or
15.0 GHz (Option 115) plus Rear Panel Option 203 227
To Retrofit the 53220A/53230A Channel 3 Input, 6.0 GHz (Option 106) or 15.0
GHz (Option 115) plus Front panel option 202 232
To Retrofit the 53220A/53230A Channel 3 Input, 6.0 GHz (Option 106) or 15.0
GHz (Option 115) plus Rear Panel Option 203 242
To Retrofit Option 150 (Pulse Microwave Measurements) for the 53230A 247