Yamaha CS1D Owner's Manual - Page 390
If both buttons are off, Status, LOCK blue, UNLOCK red, LOCK, BUT NOT SYNC'ED orange, UNKNOWN yellow
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EFFECT GEQ SCENE MIDI/GPI/TC • If both buttons are off The 68 pin D-sub will be selected. 4 Status The symbol at the left of the button indicates the clock status that is being input to that connector. This indicates the result of selecting the connector, and whether audio signals of that status are being correctly input/output between the various devices. The various statuses have the following significance. • LOCK (blue) A clock synchronized to the source selected in 2 is being input. If the clock of the selected connector displays this status, the device to which that connector belongs is correctly performing input/output within the PM1D system. This status may be displayed even when unsynchronized, if the sampling frequency is close. • UNLOCK (red) A valid clock is not being input. If the clock of the selected connector has this status, the device to which that connector belongs is unable to function with that clock. As a result, that device is operating with its own clock, and therefore unable to input/output correctly within the PM1D system. A clock that is synchronized with the source selected in 2 must be input to the selected connector. • LOCK, BUT NOT SYNC'ED (orange) A valid clock is being input, but is not synchronized to the source selected in 2. If the clock of the selected connector has this status, the device to which that connector belongs is unable to correctly perform input/output within the PM1D system. A clock that is synchronized with the source selected in 2 must be input to the selected connector. SYS/W.CLOCK (system/word clock) function • UNKNOWN (yellow) This indicates that the clock status of that connector cannot be known, because it is a virtual connection or is unconnected. Although it is possible to select this connector, valid synchronization with the PM1D system cannot be established until an actual connection is made. • SRC ON (green) This is a special status belonging only to 2-TRACK IN DIGITAL connector 3. The clock status is "LOCK" or "LOCK, BUT NOT SYNC'ED", but since an SRC (Sampling Rate Converter) is provided on the audio input section, the audio is being input normally into the PM1D system by virtue of this function, even if it is actually not synchronized. In order for the PM1D system to operate correctly, the status of the selected connectors must all be in the LOCK (blue) state. If the 2-TRACK IN DIGITAL connector 3 SRC is on, and you attempt to select this connector as the word clock master, a message of "Selecting 2TR IN 3 will turn off SRC. Are you sure?" will be displayed. When you click the OK button, the SRC will be defeated. When using an MY8-AT card to handle ADAT format signals, synchronization may tend to be lost easily, depending on the device that is connected. For more reliable synchronization, we recommend that the word clock for the combination of digital audio equipment you are using be taken from other than the ADAT format connector. UTILITY SYS/W.CLOCK METER MON/CUE 55