Advance Information
MH88437-P
-V
10H 500Ω
15
13
RS
11
100uF
+
I=20mA
LOOP
VR+
LCD
TIP
3
4
5
28
1
VR-
NB1
NB2
300Ω
DUT
VX
16K
V1
21
22
23
2
VLOOP5
Vs = 0.5V
300Ω
VLOOP4
VLOOP3
VLOOP2
VLOOP1
100uF
+
27
10
RING
82K
24
25
10H 500Ω
VBIAS
10uF
+
LC RV AGND VCC ZA
9
7
6
16
8
1K
4.7K
5V
5V
Long. to Met. Balance = 20 * Log (V1 / Vs)
CMR = 20 * Log (VX / Vs)
= Ground (Earth)
Figure 10 - Test Circuit 5
-V
10H 500Ω
15
LCD
TIP
13
RS
11
100uF
+
I=20mA
LOOP
VR+
3
4
5
28
1
VR-
NB1
DUT
300Ω
VX
16K
Vs
21
22
23
2
VLOOP5
NB2
V1
300Ω
100uF
510Ω
VLOOP4
VLOOP3
VLOOP2
VLOOP1
27
10
RING
+
82K
24
25
10H 500Ω
VBIAS
10uF
+
LC RV AGND VCC ZA
9
7
6
16
8
1K
4.7K
5V
5V
Met. to Long. Balance = 20 * Log (V1 / Vs)
= Ground (Earth)
Figure 11 - Test Circuit 6
13
MITEL [ MITEL NETWORKS CORPORATION ]
