|
TEST ITEM
|
TEST METHOD
|
TEST SPECIFICATION
|
| VR5 ADJUST |
(1.)Set SPEED = MAX, DEPTH = MIN
FEEDBACK = MIN, LEVEL = MAX
MODE = 2
(2.)INPUT = 1.4KHz –20dBv,
adjust VR5 so that output level become minimum at output terminal.
|
There should be 4 dip points occurred between 10Hz to 10KHz .
The third dip point must be 1.4KHz.
(Fig.1)
|
VR6 ADJUST
(FEEDBACK LEVEL)
|
(1.)Set SPEED = CENTER, DEPTH = MAX
FEEDBACK = MAX, LEVEL = MAX
MODE = 2
(2.)INPUT = No signal,
(1)Set VR6 =MIN
(2)Turn VR6 clockwise not to oscillate at output.
|
Check the OSC signal at output terminal when SPEED = MAX, DEPTH = MIN. |
L.F.O
(SPEED VR)
|
To test the pin (IC7 pin1) and make sure the output shall be correspondent to the condition as shoun right. |
SPEED MAX°G6.9Hz ~ 7.2Hz
SPEED MIN°G0.025Hz ~ 0.033Hz
|
