Rane AD22S AD22S Data Sheet - Page 3

AD22S Block Diagram (both channels identical) INPUT RFI Filter Sig / OL A/D D/A DELAY MEMORY DSP NONVOLATILE MEMORY MICROCONTROLLER FRONT PANEL CONTROLS LCD DISPLAY AD22S AUDIO DELAY OUTPUT Bypass Relay Bypass Recall GND Remote Ch 2 Bypass Recall GND Remote Ch 1 Delay Bypass GND Front Panel Lockout Application Information DISTANCE MODE There's more than one way to view your time setting. If you're tired of looking at milliseconds, the delay setting can also be viewed in terms relative to distance by changing the displayed units to feet or meters and by selecting the ambient temperature in either °C or °F. The AD22S calculates the precise environmental delay by using the relationship of air pressure and temperature to the speed of sound. VIDEO MODE The AD22S is an effective solution to the problem of aligning audio with video in broadcast. Because of the latency involved in processing video streams, timing offset accumulates that can run as high as several frames or lead to noticeable synchronization issues. While in Video mode, the AD22S displays the delay time in the precise number of frames calculated for your current format and frame rate. You may choose from a selection of the most common frame rates to match your work situation and environment. As you adjust the number of frames needed to synchronize the audio, the AD22S calculates the delay to match exactly what you need. REMOTE RECALL In some situations it may be necessary to recall a stored setting or enable channel bypass from a location other than where the AD22S is located. Have a room divider wall? You can install a switch to select between the two room settings automatically when the wall is moved. Does the delay for your outdoor speaker array change with the temperature? Wire up a switch to change from a memory setting adjusted for one temperature to one saved for the other when the weather warms up. For these reasons we have provided remote recall connections on the rear of the unit that can be wired to standard switches installed in any other location. Data Sheet-3