Cosel EAC Series, Instruction Manual

Page: 5 / 5

Method of measuring characteristic data
(1) Attenuation Characteristic(Static characteristic)
Attenuation= 20log(U
01
/U
02
)[dB]
U
01
: Voltage in state without filters
U
02
: Voltage in state which added filters
N.A. : Network analyzer
¡
Object product : Single phase input type (Differential mode)
5HIHUHQFH&RQQHFWLRQ
50
W
Balun Balun
50
W
N.A. N.A.
U
01
7HVW&RQQHFWLRQ
50
W
50
W
Balun Balun
EMI/EMC
Filter
N.A. N.A.
1
2 4
3
U
02
■Object product : DC input type (Common mode)
+Vin
COM-in
-Vin
COM-out
+Vout
-Vout
+Vin
-Vin
+Vout
-Vout
Reference Connection
50
W
50
W
N.A. N.A.
U
01
Test Connection(SNA)
50
W
50
W
N.A. N.A.
U
02
Test Connection(SNR)
50
W
50
W
N.A. N.A.
U
02
(SNA) (SNR)
EMI/EMC
Filter
EMI/EMC
Filter
■Object product : Three phase input type (Common mode)
Reference Connection
50
W
50
W
N.A. N.A.
U
01
Test Connection
50
W
50
W
N.A. N.A.
1
3 6
4
U
02
2 5
EMI/EMC
Filter
¡
Object product : Single phase input type (Common mode)
Reference Connection
50
W
50
W
N.A. N.A.
U
01
Test Connection
50
W
50
W
N.A. N.A.
1
2 4
3
U
02
EMI/EMC
Filter
Reference Connection
50
W
Balun Balun
50
W
N.A. N.A.
U
01
Test Connection
50
W
50
W Balun Balun
N.A. N.A.
1
3 6
4
2 5
U
02
EMI/EMC
Filter
■Object product : Three phase input type (Differential mode)
Test Connection(SNA)
50
W
Balun Balun
50
W
N.A. N.A.
U
02
+Vin
COM-in
-Vin
COM-out
+Vout
-Vout
Test Connection(SNR)
50
W
Balun Balun
50
W
N.A. N.A.
U
02
+Vin
-Vin
+Vout
-Vout
(SNA) (SNR)
Reference Connection
50
W
Balun Balun
50
W
N.A. N.A.
U
01
EMI/EMC
Filter
EMI/EMC
Filter
■Object product : DC input type (Differential mode)
(2) Pulse Attenuation Characteristic
50
W
50
W
50
W
50 W
Noise
Simulator
Vi
Vo
1
2 4
3
Input pulse waveform Output pulse waveform
Vi
Vo
1 m sec
EMI/EMC
Filter
Single phase input type
Manual-3 July 08, 2020