User manual RANE AD 22B

[. . . ] OPERATORS MANUAL AD 22B AUDIO DELAY QUICK START Quickly look around to make sure no one catches you reading this. You're aware this is the manual aren't you?Most people only get about this far in a manual, but there are a few important things you should know about the AD 22B. These few points are summarized in this Cliff Note version of the manual. [. . . ] RECALL button: Pressing this pushbutton alternately Recalls stored Memories A and B, for the Channels(s) indicated by the green CHAN LEDs. CHANNEL LEDs: indicate the Channel number whose value is currently being displayed in the LED display and whose current Delay value is editable by illuminating green. If both CHAN LEDs are on, both Channel's current Delay values are editable. In this edit BOTH mode, the LED display shows the smaller of the two current Delay values and the memory LEDs turn off if the two Channel's current Memories are not the same. CHANNEL button: Pressing this button advances the Channel LEDs from CHAN 1 to CHAN 2 to BOTH. The current Delay value of the selected Channel is displayed in the LED display. (This button does nothing in Mono Mode. ) DISPLAY MODE button & LEDs: This button changes the units of displayed Delay values from Milliseconds to Feet to Meters. The LEDs indicate the current Display Mode: MILLISECONDS, FEET or METERS. 5 digit LED display: indicates the current Delay value for the selected Channel. When both Channels are selected, the smaller of the two Channel's current Delay values is displayed. This display also shows the current temperature setting when holding down the DISPLAY MODE button and pressing one of the up/down buttons. On power-up the current software revision level and internal Stereo/Mono (2CHAN/1CHAN) configuration are displayed. UP/DOWN buttons: Pressing these buttons increases/decreases the amount of Delay in the selected Channel(s). The two buttons just to the right of the LED display change Delay time in 1 millisecond steps. The far right buttons provide 10 microsecond steps. For distance displays (feet and meters), these buttons are FINE and COARSE adjustments, since Delay increments are always in 1 msec and 10 µsec steps, regardless of the DISPLAY MODE. TEMPERATURE setting: Holding down DISPLAY MODE while pressing the up/down buttons displays the current temperature setting in degrees Celsius for the 1 msec/COARSE buttons and degrees Fahrenheit for the 10 µsec/FINE buttons. Further up/down presses change the temperature setting. No matter which unit (°C or °F), adjustments are always in 1°C steps (or 1. 8°F). Manual-2 REAR PANEL DESCRIPTION REMOTE RECALL terminals: Wiring external configuration switches to these terminals allows remote recall of the two nonvolatile memories for each Channel. When the switch closes, Memory B for the given Channel is recalled. When the switch opens, Memory A is recalled. These terminals use CMOS (+5 volt) logic levels and sink only 3 mA (max. ) each. [. . . ] The second message reports the internal Stereo/Mono configuration, "2CHAN" for Stereo, and "1CHAN" for Mono. The first time you power the AD 22B it is in BYPASS, and functions like an expensive wire. This is useful for initial trouble shooting and allows verification of signal flow. THE BASICS The AD 22B is a two Channel device. [. . . ]