Wisdom Audio DCAB-1 - Manual (Page 21)

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Using an RTA (optional) If you have access to a Real Time Analyzer (RTA), you may want to set it up as
well. This is not strictly necessary, since there is an RTA function built into the
DCAB-1, which displays on your computer via the terminal program. However,
the relatively slow speed of the RS232 interface to your computer makes re-
drawing the screen to see your changes slower than an outboard RTA.
When we at Wisdom Audio do these calibrations, we usually use an external
RTA to do most of the work. It’s simply much faster. But we always double
check the results using the DCAB-1 and the microphone it comes with, since
this microphone is calibrated against a known reference. Good RTAs are usually
pretty close (since they, too, have calibrated microphones). But we know what
the calibration standard is for our systems, and have no control over the stan-
dards of others.
Launching Tera Term Pro The Terminal Emulation program we use for accessing the many controls of the
DCAB-1 is Tera Term for Windows. It can be downloaded at
http://hp.vector.co.jp/authors/VA002416/teraterm.html
This is a free program and runs under any Windows operating system from Win-
dows 95 through Windows XP SP2. It has not been tested with Vista.
Once it is installed, connect the DCAB-1 to a serial (RS232) port and launch
Tera Term. In the New Connection dialog box, select Serial and the appropriate
COM port (COM3 in our case).
The next step is to make sure the terminal window is big enough to let you see
the entire interface at once. Choose Setup -> Terminal...
Fill out the Terminal Setup dialog box as shown below, with a size of at least 88
by 44 characters, Terminal size = window size and VT 100 emulation.