Hi Richard -
Support for the 446x was added in CalExec 3.1, so you won't be able to use 3.0.1 with that device. And support for all of our R-series boards isn't yet available, though we plan to bring it to the earliest possible future release. If you're interested in upgrading CalExec, the latest version is 3.2. You can find more information about it
here, though you'll probably have to contact your salesperson for upgrade pricing.
Offhand, general calibration procedures for any of our products are linked from the product page. From there, click the "Resources" tab, then "Manuals". The calibration procedure will be listed among the other manuals and help files. Here is the
4461's list, and here is the
7833R's.
David Staab, CLA
Staff Systems Engineer
National Instruments