How do I capture a waveform on MATH1 from my TDS754D scope?

My Tektronix TDS 754D oscilloscope has a total of 11 channels: CH[1-4], MATH[1-3], and REF[1-4]. I can capture waveforms nicely from CH[1-4] using the Configure Channel VI included in the IVI drivers for my model. That VI doesn't seem to accept MATH[1-3] or REF[1-4] though. I get an error about an "invalid parameter".
So how do I capture a waveform on the MATH and REF channels?

Look under Configuration>Math Configuration for all the functions for configuring your math channels. There is a Configuration>Reference Channels palette as submenu as well.

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