Yamaha IMX644 Owner's Manual - Page 8

Controls and Functions Front Panel 1 3 6 9 )@ 24 5 7 8 ! # 1 [LOCK] Switch and Indicator The [LOCK] switch can be used to "lock" the panel level knobs (5, 8, and 11) and MEMORY buttons, making them inoperable and preventing accidental changes. After setting levels and/or recalling a memory as required, press the [LOCK] switch with a thin object (such as the tip of a pen) to prevent further changes to the level or MEMORY settings. The LOCK indicator lights red when the controls are locked. Press the [LOCK] switch a second time to unlock the controls and allow normal operation of the level knobs and MEMORY buttons. NOTE • The LOCK buttons in the IMX644 Manager application INPUT display can be used to enable independent operation of each panel level control. • If the settings of the level knobs have been increased since the [LOCK] switch was engaged, the settings at the time the [LOCK] switch was engaged will be retained when it is disengaged. In order to increase a level setting after disengaging the [LOCK] switch in such a case it is necessary to lower the setting of the knob to the point at which it was locked, and then raise the level as required. • When the power is turned ON, the MEMORY number that was active when the power was turned OFF is recalled. Save the memory using the IMX644 Manager application before engaging the [LOCK] switch. • The LOCK function is temporarily disengaged when the IMX644 Manager application goes online. The LOCK function will be re-engaged if the unit is restarted, so don't operate the [LOCK] switch while the IMX644 Manager is online. 2 [USB] Connector The computer running the IMX644 Manager application can be connected to the IMX644 via this connector. The [USB] connector cannot be used at the same time as the rear-panel [REMOTE] connector. Precautions when using the [USB] connector When connecting the computer to the [USB] connector, make sure to observe the following points. Failing to do so risks freezing the computer and corrupting or losing the data. If the computer or the device freezes, restart the application software or the computer OS, or turn the power to the device off then on again. CAUTION • Use an AB type USB cable of less than about 3 meters. • Before connecting the computer to the [USB] connector, exit from any power-saving mode of the computer (such as suspend, sleep, standby). • Before turning on the power to the device, connect the computer to the [USB] connector. • Execute the following before turning the power to the device on/off or plugging/unplugging the USB cable to/ from the [USB] connector. - Quit any open application software on the computer. - Make sure that data is not being transmitted from the device. • While the computer is connected to the device, you should wait for six seconds or more between these operations: (1) when turning the power of the device off then on again, or (2) when alternately connecting/ disconnecting the USB cable. 8 IMX644 Owner's Manual