TA1204AF

2001-02-07 13/25

METHOD OF MEASUREMENT

Note 1:

Image signal input dynamic range

• Test condition 2 (direct-coupling mode)

• Input :

G In1 / G In2

Test signal 1

For input A, measure the peak levels at input pins 32 {34, 36} immediately before the top / down

clipping of the output signals of output pins 21 {19, 14}, while adjusting VR34 and changing the

pedestal levels at the end of the input pin. Specify the difference between the upper and lower

measurement values as the dynamic range to be obtained.

38 {40, 42}.

Note 2:

Inter-channel crosstalk 1

• Test condition 5 (CP mode, fixed polarity)

• Input :

X In1 / X In2

Test No. 2

Measurement frequency 1MHz

• Other input pins

(Y In1 · Z In1 / Y In2 · Z In2) : short to GND

black levels in the output waveform at pin 19.

For input A, input it to the X-axis (pin X In1) and measure the amplitude values of the 1MHz

components at output pins 21, 19, and 14. Short to GND the other input pins (Y In1 / Z In1).

Crosstalk from the X-axis to the Y-axis = (amplitude value of the Y-axis output) /

(amplitude value of the X-axis output)

Crosstalk from the X-axis to the Z-axis = (amplitude value of the Z-axis output) /

(amplitude value of the X-axis output)

Change the combination of X, Y, and Z among B (output pin 21), G (output pin 19), and R (output pin

at BINX, short to GND the other input pins (Y In2 / Z In2), and measure as for input A.

Note 3:

Switched SW crosstalk

• Test condition 5 (CP mode, fixed polarity)

• Input :

X In1 (X In2 = short to GND)

/ X In2 (X In1 = short to GND)

Test signal 2

Measurement frequency 1MHz

the black level in the output waveform of pin 19, input it to the channel A X-axis (pin X In1), switch

pins (pin 21 when X = B, pin 19 when X = G, and pin 14 when X = R) before and after switching.

Crosstalk from input A to input B =

(amplitude value when SW = b) /

(amplitude value when SW = a)

Change the input pin to channel B (pin X In2) and repeat the same measurement.

Crosstalk from input B to input A =

(amplitude value when SW = a) /

(amplitude value when SW = b)

Repeat this measurement replacing B, G, and R as the X-axis.

Note 4:

Typical amplitude for signal outputs, inter-axis amplitude deviation, and polarity difference

• Test condition 4 (CP mode)

• Input :

X In1

Test signal 3

Measure the amplitudes between the black and white waveform levels at output pins (pin 21 when X

= B, pin 19 when X = G, and pin 14 when X = R) for positive and negative polarities.

Repeat this measurement replacing B, G, and R as the X-axis.