Yamaha PM4000 Owner's Manual (image) - Page 39

Insert L Out, Insert Lr In Jacks

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Figure 2-8. PM4000 Rear Panels Stereo Channel Input Strip Figure 2-9. PM4000 Rear Panel: Cooling Fans and Lamp Connectors (2 shown) STEREO INPUT MODLUE INPUT STRIPS 104. INPUT L & INPUT R (connectors) These electronically balanced, female XLR-3 connectors apply signal to the left and right sides of the correspondingly numbered input channel. The nominal input level may vary from -70 dBu to +4 dBu depending on the settings of the channel input gain control and 30 dB pad switch. Since stereo input GAIN [5S] is a split control, the sensitivity of the L and R input connectors can be made to differ. 105. INSERT R OUT, INSERT R IN (Jacks) These phone jacks serve as a patch point for the signal from the right side of the correspondingly numbered stereo input channel. Nominal output and input level is +4 dBu (1.23 V). 106. INSERT L OUT, INSERT LR IN (Jacks) These phone jacks serve as a patch point for the signal from the left side of the correspondingly numbered stereo input channel. Nominal output and input level is +4 dBu (1.23 V). NOTE: The stereo INSERT jacks function exactly as those in a standard input channel [102] except that there is no front-panel Insert Pre switch. As shipped, the insert point is post-EQ, pre-fader. However, you can move an internal jumper switch in each stereo input module if you want to change the insert point from post-EQ to preEQ. Refer to Section 6 for details. OTHER REAR PANEL FEATURES 107. Cooling Fan The PM4000 contains three or four cooling fans, depending on mainframe size, distributed across the rear panel. These operate continuously to draw heat away from the internal circuits and prolong component life. NOTE: The factory still recommends that you turn off the console when it is not to be used for prolonged periods. An exception is in high-humidity environments, or where a sudden temperature change is likely to produce condensation, in which case the console may be left on to avoid moisture accretion. 108. LAMP (4-pin XLR connector) These four-pin female XLR connectors provide dimmer-controlled DC power for "LittLites" that are supplied with the console. There are three lights on the 24 channel and 32 channel mainframes, and four on the 40 and 48 channel mainframe. Maximum output is 12 volts. (Pins 1 and 2 of the XLR are not used, pin 3 is the 12 volt supply, and pin 4 is DC ground.) Page 2-28

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STEREO INPUT MODLUE INPUT STRIPS
Figure 2-8. PM4000 Rear Panels
Stereo Channel Input Strip
Figure 2-9. PM4000 Rear Panel:
Cooling Fans and Lamp Connectors (2 shown)
The PM4000 contains three or four cooling fans,
depending on mainframe size, distributed across
the rear panel. These operate continuously to draw
heat away from the internal circuits and prolong
component life.
NOTE: The factory still recommends that you turn off
the console when it is not to be used for prolonged
periods. An exception is in high-humidity environments,
or where a sudden temperature change is likely to
produce condensation, in which case the console may be
left on to avoid moisture accretion.
108. LAMP (4-pin XLR connector)
These four-pin female XLR connectors provide
dimmer-controlled DC power for “LittLites” that
are supplied with the console. There are three
lights on the 24 channel and 32 channel
mainframes, and four on the 40 and 48 channel
mainframe. Maximum output is 12 volts. (Pins 1
and 2 of the XLR are not used, pin 3 is the 12 volt
supply, and pin 4 is DC ground.)
Page 2-28
104. INPUT L & INPUT R (connectors)
These electronically balanced, female XLR-3
connectors apply signal to the left and right sides of
the correspondingly numbered input channel. The
nominal input level may vary from -70 dBu to +4
dBu depending on the settings of the channel input
gain control and 30 dB pad switch. Since stereo
input GAIN [5S] is a split control, the sensitivity of
the L and R input connectors can be made to differ.
105. INSERT R OUT, INSERT R IN (Jacks)
These phone jacks serve as a patch point for the
signal from the right side of the correspondingly
numbered stereo input channel. Nominal output
and input level is +4 dBu (1.23 V).
106. INSERT L OUT, INSERT LR IN (Jacks)
These phone jacks serve as a patch point for the
signal from the left side of the correspondingly
numbered stereo input channel. Nominal output
and input level is +4 dBu (1.23 V).
NOTE: The stereo INSERT jacks function exactly as
those in a standard input channel [102] except that there
is no front-panel Insert Pre switch. As shipped, the insert
point is post-EQ, pre-fader. However, you can move an
internal jumper switch in each stereo input module if
you want to change the insert point from post-EQ to pre-
EQ. Refer to Section 6 for details.
OTHER REAR PANEL FEATURES
107. Cooling Fan