4 Advanced Operation
4-4
Matsusada Precision
AK series
4-5-3 External (EXT) Output Voltage Control and Internal (INT) Output Current Control
Short the part of ----- in Fig.4.4, and the output voltage, and the output current can be controlled
externally and internally respectively.
The same may be said of 4.4 External voltage control.
Caution Do not connect the external power supply and the external volume to Pin No.2.
4-6 Remote Switch ON/OFF(LS)
The remote switch can select the output to ON/OFF. (The open collector can also do.)
When the output is ON, the front panel OUTPUT LED is lit.
This function is effective regardless of selection of INT/EXT.
Front panel
CURRENT dial
14
15
16
17
18
19
20
25
1
2
3
4
5
6
7
8
13
CV ERROR AMP
CC ERROR AMP
4mA max 10.24Vdc
TB1
CV = EXT
CC = INT
Current
control
10.24Vdc
Voltage control
5kΩ
5kΩ
Fig. 4-4
External volume voltage control
“L” = HV ON
Switch 2
Fig. 4-5
Remote switch
17
18
19
20
21
4
5
6
7
8
TB1
Switch 2 Open
= Output OFF
Switch 2 Short
= Output ON
NO
