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M61323SP/FP
REJ03F0201-0201 Rev.2.01 Mar 31, 2008
Page 8 of 19
Freq. Characteristic 3, 4
Measure the F
C3
, F
C4
when SG5 of input signal. (For reference)
Crosstalk between Two Inputs 1, 2
1. The conditions is as table. This measurement shall use active probe.
2. Set SW13 to GND, input SG3 to pin 2 only. Read the output amplitude of TP31. The value is as V
OR
3.
3. Then set SW13 to OPEN, read the output amplitude of TP31. The value is as V
OR
3'.
4. Crosstalk between two inputs 1 C.T.I.1 is
C.T.I.1 = 20log (dB)
V
OR
3 [V
P-P
]
V
OR
3' [V
P-P
]
5. In the same way, calculate C.T.I.1 in response to inputs in pin 4 and pin 6 only.
6. Then set SW13 to OPEN, input SG2 to pin 10 only. Read the output amplitude of TP31. The value is as V
OR
4.
7. Set SW13 to GND, read the output amplitude of TP31. The value is as V
OR
4'.
8. Crosstalk between two inputs 1 C.T.I.2 is
C.T.I.2 = 20log (dB)
V
OR
4 [V
P-P
]
V
OR
4' [V
P-P
]
9. In the same way, calculate C.T.I.2 in response to inputs in pin 12 and pin 14 only.
Crosstalk between Two Inputs 3, 4
Set SG4 as the input signal, and then the same method as table, measure C.T.I.3, C.T.I.4.
Crosstalk between Channels 1, 2
1. The conditions is as table. This measurement shall use active probe.
2. Set SW13 to GND, input SG3 (0.7 V
P-P
) to pin 2 only. Read the output amplitude of TP31. The value is as V
OR
5.
3. Next, measure TP28, TP25 in the same state, and the amplitude is as V
OG
5, V
OB
5.
4. Crosstalk between channels1 C.T.C1 is
C.T.C1 = 20log (dB)
V
OR
5
V
OG
5 or V
OB
5
5. In the same way, calculate C.T.C1 in response to inputs in pin 4 and pin 6 only.
6. Then set SW13 to OPEN, input SG3 (0.7 V
P-P
) to pin 10 only.
Read the output amplitude of TP31. The value is as V
OR
6.
7. Next, measure TP28, TP25 in the same state, and the amplitude is as V
OG
6, V
OB
6.
8. Crosstalk between two inputs 1 C.T.C2 is
C.T.C2 = 20log (dB)
V
OR
6
V
OG
6 or V
OB
6
9. In the same way, calculate C.T.C2 in response to inputs in pin 9 and pin 11 only.
Crosstalk between Channels 3, 4
Set SG4 as the input signal, and then the same method astable, measure C.T.C3, C.T.C4.