General Information - Supported models  Series 3700A Firmware Release Notes 
  3706A-850SV1.55a / June 2017 
General Information 
Supported models 
This firmware is used on the following Keithley Instruments product models: 
 
Models 3706A, 3706A-S, 3706A-NFP, 3706A-SNFP, and all Series 3700 cards. 
 
Because this firmware is used on multiple models, this version of firmware may be available for use on one or 
more models while still being unqualified for use on the others. Please refer to the upgrade considerations section 
below for the product of interest for more details. 
Installation instructions 
To install this firmware, please follow the installation instructions in the Reference Manual. 
Upgrade Considerations 
The 1.51 and higher firmware releases can only be used on 3700A models. These releases are not compatible 
with 3700 (non-A) models. 
 
The following table lists the considerations that should be made when deciding whether to upgrade your Series 
3700A instrument firmware to version 1.55. 
 
 Review the entire list of changes made in all firmware versions between your current version and version 1.55.   Upgrade if 
any of the fixes or enhancements are needed.