Advance Information
MH88617
+5V
1K
-5V
-48V +5V
+90V
LCA
SHK
TIP
VBAT VCC VEE DCRI
LR
I
VX
10uF
SW1
3
R1
1
DUT
2
GVX
300R
1.6k
Z2
VR
R2
RING
RV
RDO
ESI ESE GND
1K
RC
ZA RDI
Z1
Ringing
100W
Source
1.2Vrms
20Hz
Z1 = 30kW
Z2 = 18k + 18K T 470pF
R2 = 110k
R1 = 36k
Figure 5 - DC Condition Test
+5V
1K
-48V +5V -5V
+90V
100uF
LCA
SHK
TIP
VBAT VCC VEE DCRI
LR
VX
+
R1
Z2
10H
1kW
DUT
Vs
GVX
VR
Impedance = 600W
I=24mA
100uF
+
RING
RV
R2
RDI RDO
ESI ESE GND
1K
RC
ZA
Ringing
Source
Z1
100W
1.2Vrms
Z1 = 30kW
Z2 = 18k + 18K T 470pF
R2 = 110k
R1 = 36k
4-2 Wire Gain = 20 * Log (VX / Vs)
Figure 6 - 2-4 Gain Wire Test Circuit
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