Advertisement
1.5 You will see the two metal cases. There is one screw on the PCB. Loosen it, then the whole
metal case can be taken out. There are two wires still connected with the upper case. Leaves
them there.
2. Explanation of adjustment point. Please refer to Fig. 5.
(1) SW1: Switch for selecting attenuation ratio.
(2) SW2: Power switch.
(3) VR2: Variable resistor for adjusting output offset at 10:1.
(4) VR4: Variable resistor for adjusting output offset at 100:1.
(5) VC1: Variable capacitor for adjusting positive square wave compensation.
(6) VC2: Variable capacitor for adjusting negative square wave compensation.
(7) VR1: Variable resistor for adjusting 10:1 low frequency 60 Hz CMRR.
(8) VC1: Variable capacitor for adjusting 10:1 high frequency 20 kHz CMRR.
(9) VR3: Variable resistor for adjusting accuracy.
(10)
CON1: Power jack for connecting to 6 VDC power adapter.
Fig. 4
VR1 VC1
VC2
VR3
Fig. 5
2
VR2
SW1
VR4
LED CON1
SW2
Advertisement
