Series 3700A Firmware Release Notes  Version 1.55 Release - Upgrade considerations 
3706A-850SV1.55a / June 2017 
Version 1.55 Release 
Upgrade considerations 
The 1.55 release can only be used on 3700A models. This release is not compatible with 3700 (non-A) models. 
This release is the first to support the new 3760, 3761, 3762, and 3765 switch cards. 
Overview 
The following table lists the exact version numbers of the available Series 3700 components. 
 
Series 3700A High Performance DMM 
3720 Dual 1x30 Multiplexer 
3721 Dual 1x20 Multiplexer 
3722 Dual 1x48 High Density Multiplexer 
3723 Dual 1x30 High Speed Reed Relay Multiplexer 
3724 Dual 1x30 FET Multiplexer 
3730 Dual 6x16 High Density Matrix 
3731 Dual 6x16 High Speed Reed Matrix 
3732 Quad 4x28 High Speed Reed Matrix 
3740 32 Channel Isolated Switch 
3750 Multifunction I/O Card 
3760 10-ch Hi-I Multiplexer 
3761 10-ch Lo-I Multiplexer 
3762 10-ch Hi-V Multiplexer 
 
Critical fixes  
Models affected: 
Models 3706A, 3706A-S, 3706A-NFP, 3706A-SNFP. 
 
Symptom: 
The instrument skips a scan step when two consecutive steps are identical. LAN trigger is generated 
after the first step, but not after the second one. 
 
Workaround: 
None. 
 
Resolution: 
This issue has been corrected.