Using the Spektrum DM9 module with Taranis and Turnigy 9xr

Daedelus66 notes that these settings work when using a DM9 in a Taranis (and presumably other {er,open}{9x,tx} radios):

• polarity set to +, rather than the default - (which works with the Orange module).
• preferable but not required to set PPM to 400u instead of the default 300u. ensures neutral remains at 1.5ms -- if left on 300u it will be significantly shifted and require recentering servos.
• DM9 uses only the three basic pins: signal #1, positive #3, and ground #4. Pins 2 and 5 are unused, so no problem there.
• model match not supported.
• rebind by holding the module button while powering up.

Taranis Module Pin-Out

Courtesy of RCG user smoothvirus, here's two shots showing the pinout for JR-style modules.  The first is an actual JR radio, the second is the motherboard on the Taranis.

This should be the same for 9x and 9xr as well.

It was suggested that it would be useful to measure the voltage under load from the module connectors when calibrating the voltage.