CXL1503M/1505M
Notes)
1. Linearity testing
For A channel and B channel, set input bias E
1
to ABCN + 0.2 [V] first, and then set it to ABCN [V] and ABCN
– 0.2 [V]. Then input a sine wave of 100kHz and 100mVp-p, and compare the three output amplitudes.
For C channel and D channel, set input bias E
1
to ABBL – 0.4 [V] first, and then set it to ABBL – 0.2 [V] and
ABBL [V]. Then input a sine wave of 100kHz and 100mVp-p, and compare the three output amplitudes.
The maximum output amplitude for the respective A, B, C and D channels is taken as Sout max. and the
minimum output amplitude as Sout min. The linearity of the respective channels is defined as
Lin =
Sout max – Sout min
×
200 [%]
Sout max + Sout min
2. Calculation of insertion gain difference
As the max. insertion gain among A, B, C and D channels' is taken as Gmax and the min. as Gmin., the
insertion gain difference between channels becomes:
∆G
= ABS (1 – 10
(
Gmax – Gmin
20
)
)
×
100 [%]
3. Calculation of linearity difference
Define A channel linearity as L
A
, and B channel linearity as L
B
. We obtain the difference
∆L
AB
as follows.
∆L
AB
=
L
A
– L
B
[%]
Similarly we obtain the linearity difference
∆L
CD
of C channel and D channel as follows.
∆L
CD
=
L
C
– L
D
[%]
4. Crosstalk calculation
We take CRTa as: A channel crosstalk value only during B channel input
CRTb as: B channel crosstalk value only during A channel input
CRTc as: C channel crosstalk value only during D channel input
CRTd as: D channel crosstalk value only during C channel input
The crosstalk value of respective channels becomes:
CRTa to d =
Crosstalk component
×
100 [%]
Each channel output value
–4–
SONY [ SONY CORPORATION ]
