Tektronix TPG20 Manuel d'utilisateur télécharger pdf (Page 20)

Performance Check and Calibration Procedures

1–8

TPG20 Service

Groups: LINEARITY; RAMP 100% 625 PAL/D2

h. Use VM700A to check for a composite video signal of 1.0V ±1.0% on

both of the TPG20 B Analog Outputs.

i. Set TPG20:

FORMAT 625/50 COMPONENT D1/YPrPb

Groups: LINEARITY; RAMP 100% 625/50 D1/YPrPb

j. Use VM700A to check for a luminance signal of 1.0V ±1.0% on both of

the TPG20 A Analog Outputs.

k. Set TPG20:

FORMAT 625/50 COMPONENT YPrPb

Groups: LINEARITY; RAMP 100% 625/50YPrPb

l. Use VM700A to check for a luminance signal of 1.0V ±1.0% on both of

the TPG20 A Analog Outputs.

m. Set TPG20:

FORMAT 625/50 COMPOSITE SECAM

Groups: BARS; EBU COLOR BARS 625 SECAM

n. Use VM700A to check for a composite video signal of 1.0V ±1.0% on

both of the TPG20 B analog outputs. Check for a 1.0V ±1.0%

luminance signal on both of the TPG20 A Analog Outputs.

o. Set TPG20:

FORMAT 525/60 COMPONENT D1/YPrPb

Groups: LINEARITY; RAMP 100% 525 D1/YPrPb

p. Use VM700A to check for a luminance signal of 1.0V ±1.0% on both of

the TPG20 A Analog Outputs.

q. Set TPG20:

FORMAT 525/60 COMPONENT YPrPb

Groups: LINEARITY; RAMP 100% 525YPrPb

r. Use VM700A to check for a luminance signal of 1.0V ±1.0% on both of

the TPG20 A Analog Outputs.

s. Select TPG20 variable gain and verify that gain can be adjusted over the

range of at least +2.5dB to –25.0 dB (as displayed on the TPG20

display). Note that the amplitude changes are visible on the VM700A.

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Tektronix TPG20 Manuel d'utilisateur Page 20