Sony CCU-TX7 Service Manual page 35

. S201 (MIC 1 LEVEL)
This switch sets the audio signal level of the MIC OUTPUT
CH-1 connector on the CCU rear panel to 0 dBu or _20 dBu.
Factory setting : 0 dBu
. S301 (MIC 2 LEVEL)
This switch sets the audio signal level of the MIC OUTPUT
CH-2 connector on the CCU rear panel to 0 dBu or _20 dBu.
Factory setting : 0 dBu
. S2004 (MIC TEST)
This switch is for mixing the MIC (1 or 2) audio from the
CA-TX7/TX7P with the program audio (PGM) and for
monitoring the audio.
CH-1 : MIC 1 audio mixes to the program audio.
CH-2 : MIC 2 audio mixes to the program audio.
OFF : MIC 1 audio and MIC 2 audio do not mix to the
program audio.
Factory setting : OFF
. S2006 (RTS 200 Z ON/OFF)
This switch sets to ON or OFF position for 200 Z
termination in the RTS system. Usually, this switch sets to
OFF position because the RTS system has 200 Z
termination.
Factory setting : OFF
. S2081 (PGM IN)
This switch sets the PGM (program audio) level to 0 dBu or
_20 dBu.
Factory setting : 0 dBu
CCU-TX7 (E)/V1 2-9