Yamaha PM4000 Owner's Manual (image) - Page 44
Input Connector see Fig 2-17 for Pin ID - intercom
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134. TB OUT This male XLR connector outputs signal from the talkback circuit when the TB OUT switch [64] is on. If that switch is OFF, this output is muted. Assuming the TB OUT switch is on, this output is derived from the talkback input XLR when the TALKBACK switch [74] is engaged. Otherwise the TB OUT is derived from the console's oscillator/ noise generator. The TB OUT may be fed to the IFB (Interruptible Foldback) program input of an intercom system in order that the console operator can talk into the intercom system. In some cases, it can be applied to an auxiliary program audio input or some other input on a standard intercom system. It also may be fed to a monitor console's input channel (which is monitored via CUE) or COMM input to enable the PM4000 operator to communicate with the other console's operator. 135. OSC OUT This male XLR connector outputs signal from the console's oscillator/noise generator when the OSC OUT switch [65] is on. In order to actually obtain any output signal, however, the oscillator must be switched on [67], and the OSC LEVEL control [69] must be turned up. 136. AUX ST 1 OUT (L, R) These two male XLR connectors output signal from the stereo 1 auxiliary mixing bus, just after the AUX ST 1 Master level controls [53]. They may be used for echo/effects sends, for stage foldback (stage monitors), for auxiliary mono or stereo program feeds to remote locations and/or tape recorders, and so forth. 137. AUX ST 2 OUT (L, R) These two male XLRs are identical to the AUX ST 1 connectors, but derive signal from the number 2 stereo aux mix. 138. MONITOR OUTPUT A (L, R) This pair of XLR connectors output the same Monitor A selected signal which appears at the PHONES output jacks [92]. However, the MONITOR A OUT will be muted when the Talkback function is activated, whereas the phones output remains unmuted. If any CUE switch is activated, then cue signal replaces the selected Monitor A signal in these outputs. These connectors are useful for driving control room monitor amps and speakers for the console operator, or a headphone distribution system (with external power amp). 139. MONITOR OUTPUT B (L, R) This pair of XLR connectors output the Monitor B selected signal. The MONITOR B OUT will be muted when the Talkback function is activated, but are unaffected by the CUE function. These connectors are useful for driving studio or stage monitor amps and speakers, or a headphone distribution system (with external power amp). 140. DC POWER INPUT This multi-pin, locking connector accepts a special umbilical cable from the console's external power supply (Model PW4000). The cable should be carefully mated, making sure the locking ring is securely hand tightened to avoid inadvertent disconnection. Figure 2-15. PM4000 Rear Panel: DC Power Input Connector (see Fig 2-17 for Pin ID) Page 2-33