Alto aMictube, Service Manual

Page: 21 / 33

Test Procedures for aMICTUBE
Amplitude response test
On PC:
-Load file:amictube_amplitude(APWin File menu / Open / Test)
Test Connections:
-Output A of Audio Precision System Two
?
CH1 input of the device under test.
-Output B of Audio Precision System Two
?
CH2 input of the device under test.
-CH1 output of the device under test
?
A input of Audio Precision System Two.
-CH2 output of the device under test
?
B input of Audio Precision System Two.
On the aMICTUBE:
-Set INPUT GAIN to zero.
-Set DRIVE to maximum.
Start the sweep (F9) and control the results (Page3 – Graph) in the following conditions:
SEKAKU 06/25/02 11:48:07
Color Line Style Thick Data Axis
Red Solid 1 Anlr.Level A Left
Magenta Solid 1 Anlr.Level A Left
-30
+25
-25
-20
-15
-10
-5
+0
+5
+10
+15
+20
d
B
m
20 20k 50 100 200 500 1k 2k 5k 10k
Hz