Yamaha QL5 Reference Manual - Page 185

WORD CLOCK/SLOT window 1 3 2 6 4 5 7  MASTER CLOCK SELECT field 1 Master clock frequency display Indicates the frequency (44.1 kHz or 48 kHz) of the currently-selected master clock. If the unit is not synching to the master clock, "UNLOCK" will appear. NOTE • If sample rate pull-up/down has been specified in the Dante Controller application, this area indicates the change in the sample rate as a percentage, such as -4.0%, -0.1%, +4.0%, 4.1667%, etc. • To change the master clock when sample rate pull-up/down has been specified, disable the pull-up/down in the Dante Controller, change the master clock, then specify pull-up/down again. 2 Master clock select buttons Use the buttons to select the clock source that you want to use as the word clock master from the following options: • INT 48 k • INT 44.1 k The QL console internal clock (sampling rate 48 kHz or 44.1 kHz) will be the clock source. • WORD CLOCK IN The word clock supplied from the WORD CLOCK IN jack on the rear panel of the console will be used as the clock source. Setup • DANTE 48k • DANTE 44.1k The word clock supplied from the Dante jack on the rear panel of the console will be used as the clock source. • SLOT 1-2 The word clock supplied via a digital I/O card installed in a console slot will be used as the clock source. Word clock can be selected in pairs for each slot. 3 Clock status display Indicates the status of synchronization with the master clock for each clock source. Each indicator is explained below: • LOCKED (light blue) Indicates that a clock synchronized with the selected clock source is being input. If an external device is connected to the corresponding connector or slot, input/output is occurring properly between that device and the QL series console. If the sampling frequency is close, this status may be displayed even if not synchronized. • LOCKED, BUT NOT SYNC'ED (yellow) A valid clock is being input, but is not synchronized with the selected clock source. If an external device is connected to the corresponding connector, input/output cannot occur correctly between that device and the QL series console. • SRC ON (green) This is a special status that applies only to SLOT1-2, indicating that the corresponding channel's SRC (Sampling Rate Converter) is enabled. This means that even if the signal is not synchronized, normal input/output with the QL series console is occurring. • UNLOCKED (red) A valid clock is not being input. If an external device is connected to the corresponding connector, input/output cannot occur correctly between that device and the QL series console. • UNKNOWN (black) This indicates that the clock status cannot be detected because no external device is connected or because there is no valid clock input. You will be able to select this connector/slot, but successful synchronization cannot occur until a valid connection is established. NOTE • If the indicator for the selected clock does not turn light blue, make sure that the external device is correctly connected, and that the external device is set to transmit clock data. • Noise may occur at the output jacks when the word clock setting is changed. To protect your speaker system, be sure to turn down the power amp volume before changing the word clock setting. • If you attempt to select a channel (for which SRC is on) as the word clock source, a message will appear, warning you that the sampling rate converter will be disabled. 185 Reference Manual