Motorola Solutions WiNG 5.2.6 Reference Manual page 281

Wireless Configuration 6 - 19
Figure 6-6 WLAN Security - WPA2-CCMP screen
5. Define Key Settings.
Pre-Shared Key Enter either an alphanumeric string of 8 to 63 ASCII characters or 64 HEX
characters as the primary string both transmitting and receiving
authenticators must share. The alphanumeric string allows character
spaces. The access point converts the string to a numeric value. This
passphrase saves the administrator from entering the 256-bit key each
time keys are generated.