Rane AD 22 Manual

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Side 1/4

Manual-1

OPERATORS MANUAL AD 22

AUDIO DELAY

AD 22 CONNECTION

When connecting the AD 22 to other components in your

system for the first time, leave the power supply for last. This

gives you a chance to make mistakes and correct them before

any damage is done to your fragile speakers, headphones,

ears, or brains. The AD 22 passes audio while it is unpowered

by virtue of its fail safe bypass relays (when the AD 22

functions as a wire). Turn the system volume down before

plugging in the AD 22’s power.

INPUTS AND OUTPUTS

The AD 22’s Inputs are electronically balanced. The

screw terminals prefer #6 spade connectors. Stripped or

tinned wire makes an unreliable union. Connect AD 22 shield

wires to the signal ground terminal, the chassis ground screw

or neither. The AD 22’s Outputs are balanced line drivers.

REMOTE RECALL TERMINALS

Each channel of the AD 22 has two nonvolatile Memories,

“A” and “B”. Connecting a switch between the GND and

CH1 or CH2 terminals permits recalling the Memories

remotely. Only a change in the switch position is sensed—

when the switch closes, Memory B for the given Channel is

recalled. When the switch opens, Memory A is recalled.

Connecting the two Channel terminals (CH1 & CH2) together

on one side of the same switch, permits stereo recall of

Memories A and B.

QUICK START

Quickly look around to make sure no one catches you reading this. You’re aware this is the manual aren’t you? Wow!

Most people only get about this far in a manual, but there are a few important things you should know about the AD 22. So

please keep reading. These few points are summarized in this Cliff Note version of the manual.

ADJUSTING SENSITIVITY. First apply a signal with nominal input level and adjust the SENSITIVITY controls so

the red CLIP LEDs just light, then back off so the LEDs do not turn on, even with high signal peaks.

SETTING DELAY. Now that the input signal is calibrated, press the CHAN button until the CHAN LEDs indicate the

Channel you want to set. We cover the special case of adjusting both Channels simultaneously later (both CHAN LEDs on).

Adjust the up/down buttons until the LED display shows the desired Delay. To adjust the Delay of the other Channel press

the CHAN button until the other Channel’s LED is lit, and adjust the Delay as before.

STORING DELAY. Press the STORE button (the STORE LED stops flashing). This stores the current Delay values

into each Channel’s current Memory (A or B). The current Memory for each Channel is indicated by the MEMORY LED

lit when editing that Channel. Both Channel's current Delay values are stored with each press of the STORE button.

RECALLING DELAY. To recall a stored Memory, press RECALL. Each press of this button alternately recalls stored

Memories (A then B then A…) for the selected Channel only.

A quick way to recall Memories into both Channels simultaneously, is to store both Channel’s values into the same

Memory. With both Channels selected (both CHAN LEDs on), press RECALL to restore both Channel's Memories at the

same time.

SETTING TEMPERATURE. The AD 22 is factory set for 22°C/71.6°F. To change this, press and hold DISPLAY

MODE and press one of the up/down buttons. Use the 1ms/COARSE buttons for degrees Celsius or the 10µs/FINE buttons

for degrees Fahrenheit. The LED display shows the temperature setting. Further pressing of the up/down buttons adjusts the

temperature setting. This temperature is used, with constant 30% humidity, to calculate the speed of sound for converting

delay times into distance.

NEVER CONNECT ANYTHING EXCEPT AN APPROVED RANE POWER SUPPLY TO THE RED THING THAT

LOOKS LIKE A TELEPHONE JACK ON THE REAR OF THE UNIT. This is an AC input and requires special attention if

you do not have a power supply exactly like the one originally packed with your unit. See the full explanation of the power

supply requirements elsewhere in this manual.

Note: It is normal to hear harmless short bursts of stored data playback when recalling a memory. Also, powering up

the AD 22 without input signal eliminates chirping that may occur when scrolling delay values.

WEAR PARTS: This product contains no wear parts.

Manual-2

FRONT PANEL DESCRIPTION

 SIGNAL LEDs: illuminate green 34 dB before clipping.

 SENSITIVITY controls: vary incoming signal levels to the A to D converter. The output signal is also adjusted so the AD

22B always passes signal with unity gain. (See operating instructions.)

 CLIP LEDs: illuminate red 4 dB before clipping at the A to D converter input.

 BYPASS buttons & LEDs: These momentary push buttons toggle each Channel’s hard-wired Bypass. If an LED is on, the

given Channel is Bypassed and functions like a wire. If it is off the given channel is active.

 STORE LED: flashes green when the current configuration of the AD 22B is different from the stored configuration. The

STORE LED is off when the current configuration matches the stored configuration.

 STORE button: Stores the current Delay configuration into both Channel’s current Memory (A or B). The current Memory

for each Channel is indicated by the MEMORY LED which is lit when editing that Channel.

 MEMORY LEDs: indicate the most recently recalled Memory, A or B, for each Channel by illuminating yellow. They also

indicate the Memory that is written to when the STORE button is pressed. The MEMORY LED flashes when the current

Delay value for the selected Channel is different than the stored value for the selected Channel.

 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).

Produkt Specifikationer

Mærke:	Rane
Kategori:	Ikke kategoriseret
Model:	AD 22

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