Frequency Control of FSW0020 Synthesizer

I'm following the instructions to control the NI FSW0020 synthesizer frequency using Table 2a for native USB control in the Communications Manual here (http://ni-microwavecomponents.com/manuals/5580510-01.pdf).

However, the only thing that happens is that the default RF output frequency of 10 GHz gets changed to 2.07 GHz (regardless of what frequency I try to change it to) and then won't change to anything else from there (again, regardless of what frequency I put in the control command).

Any help is appreciated.