AF321

ECHO KILLER

[Current Store(ja)] [Selection Guide][System Diagram][Catalog]

Echo measures by the satellite broadcasting
RCA input and output connectors
19 inches 1U size

AF321 is the echo killer that the delay with the phone line which occurs when it does a remote lesson, video conferencing with a satellite was developed to solve a problem.
A program signal input into ch1 switches a line to ch2 (usually minus one signal) as trigger by signal input of the locality.
When it detects a level with more than of setting in trigger input, it is replaced from input 1 by input 2 and returns setting time later when trigger input disappears.

“Audio input-output”
All the input-output is RCA pin jack.
Those reference level does not prescribe the maximum level by using a relay in a switch of input 1 or 2 and the output.

“Setting”
It is possible for continuous variables to trigger level to -20dBu to -60dBu.
When it takes trigger, TRIGGER lamp turns on, and SELECT lamp turns on while it is replaced by input 2.
At time to return to input 1 after trigger disappeared, there are continuous variables from 0.1 seconds to 5 seconds.

“Release time”
It sets time to be replaced by input 1 after trigger input became lower than a threshold.
When it takes re-trigger within setting time, it is not replaced.

“Bypass”
When it does not do a switch by the trigger input, it can prohibit it with BYPASS switch.
In this case, the output is fixed to input 1.
When it presses down a button at the time of select state, bypath function works after setting of the release time.
(the lamp turns on in umber.)

■ Specifications
•AUDIO INPUT 1: STEREO RCA
•AUDIO INPUT 2: STEREO RCA
•AUDIO OUTPUT: STEREO RCA
•TRIGGER INPUT: 47kΩ RCA
•THRESHOLD: -20 to -60dBu
•RELEASE TIME: 0.1s to 5s
•MAINS: 100VAC 50/60Hz MAX 10W
•DIMENSIONS: 482Wx44Hx303D, 4kg

• Order Information