M-AUDIO Biport 2x4s - Manual (Page 11)

SMPTE “Format” Button
The “Format” button is used to select the SMPTE output format.
Repeatedly pressing this button will cycle the unit through the four
SMPTE formats displayed on the front panel LEDs. This button is inac-
tive if the BiPort 2x4s is currently reading or writing SMPTE.
“Mac Thru” Button
The “Mac Thru” button selects whether host data is routed to the BiPort
circuitry, or instead by-passed directly to the “Mac Thru” port. To
bypass the BiPort circuitry, set the button to the “Thru” position by
pushing it until it latches in. Setting the BiPort to the “Thru” mode will
make the BiPort transparent to the Mac; the Mac may communicate
directly with a modem or printer that is attached to the “Mac Thru” port
on the back panel of the BiPort.
NOTE: The Mac Thru function does not work with PC com-
puters and peripherals. It is intended for use with Mac
computers only.
To make the BiPort available for communication with a host computer,
set the button to the “MIDI” position by pushing it until it latches out.
When set to this mode, any external device attached to the Mac Thru
port is disabled from communicating with the host computer.
NOTE: In “Thru” Mode, the BiPort can only act as a stand-
alone unit. To indicate that it is “crippled for interface use”
during this mode, the BiPort continuously and alternately
lights the “MAC” and “PC” LEDs on its front panel.
11