M52722 データシートの表示（PDF） - MITSUBISHI ELECTRIC

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M52722

3-CHANNEL VIDEO PREAMPLIFIER PROVIDED WITH OSD MIX AND RETRACE LINE BLK FOR HIGH-RESOLUTION

MITSUBISHI ELECTRIC  

MITSUBISHI ICs (Monitor)

M52722SP

3-CHANNEL VIDEO PREAMPLIFIER PROVIDED WITH OSD MIX

AND RETRACE LINE BLK FOR HIGH-RESOLUTION

Oaj1 main OSD adjustment control characteristics (at max.)

and

∆Oaj1 relative main OSD adjustment control characteristics (at

max.)

1. The conditions shall be as specified in the electrical

characteristics table.

2. Let output signal pedestal voltage of T.P25 (T.P30 or T.P35) be

VLRA (VLGA or VLBA) and voltage in the OSD area be VHRA (VHGA

or VHBA).

3. If letting Oaj1 be VORA (VOGA or VOBA),

Oaj1=VORA (VOGA, VOBA) = VHRA-VLRA

(VHGA-VLGA, VHBA-VLBA)

4. Relative OSD adjustment control characteristics ∆Oaj1:

∆Oaj1=VORA/VOGA, VOGA/VOBA, VOBA/VORA

Oaj2 main OSD adjustment control characteristics (at min.)

and

∆Oaj2 relative main OSD adjustment control characteristics (at

min.)

Change V36 to 0V, and obtain Oaj2 or ∆Oaj2 as in the case of Oaj1

or ∆Oaj1.

OSDth OSD input threshold voltage

1. The conditions shall be as specified in the electrical

characteristics table.

2. Gradually reduce SG6 level at this time, while monitoring the

output, and measure top SG6 level when output is stopped to let

the value be OSDth.

V1th BLK input threshold voltage

1. The conditions shall be as specified in the electrical

characteristics table.

2. Verify at this time that no signal is output with a timing in which

output is synchronized with SG6.

(OSD blanking period)

3. Gradually reduce SG6 level at this time, while monitoring the

output, and measure top SG level when OSD blanking period

expires to let the value be V1th.

SOaj1 SUB OSD adjustment control characteristics (at typ.)

and

SOaj2 SUB OSD adjustment control characteristics (at min.)

1. The conditions shall be as specified in the electrical

characteristics table.

2. Read output amplitude of T.P25 (T.P30 or T.P35) at this time, and

let the reading be VORC (VOGC or VOBC) to let it be Soaj1 or

Soaj2.

HBLK retrace line BLK characteristics

1. The conditions shall be as specified in the electrical

characteristics table.

2. Monitor output at this time, and read trace line blanking level to

let the reading be HBLK.

HVth retrace line BLK input threshold voltage

1. The conditions shall be as specified in the electrical

characteristics table.

2. Verify that blanking is performed with a timing in which output is

synchronized with SG7. Gradually reduce SG7 level, while

monitoring the output, and measure top SG7 level when blanking

period expires to let the reading be HVth.

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