Sierra Video Ponderosa 3G Series Routing Switcher - Manual (Page 77)

PONDEROSA
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Crosspoint/ Output Driver Modules
The analog audio crosspoint module used in Ponderosa Audio is a 128x32 module. The
switching integrated circuit (IC) is a HCMOS 16x8 array. Thirty-two of these switching
IC’s are arranged to form a 128x32 matrix.
Each output bus from the switching matrix feeds a differential output. The output driver
provides a symmetrical low impedance output signal.
The 64x64 frame has positions for two 128x32 / 32-channel output driver modules; the
128x128 frame has positions for four 128x32 / 32-channel output driver modules.
Grounding the negative side of the output drive adds +6dB of audio gain.