M52749FP Просмотр технического описания (PDF) - Renesas Electronics

Номер в каталоге

Компоненты Описание

производитель

M52749FP

BUS Controlled 3ch Video Pre-amp for CRT Display Monitor

Renesas Electronics 

M52749FP

Oaj1 OSD Adjust Control Characteristics1

Measure the amplitude output at OUT (33, 38, 41). The measured value is called VOUT (33, 38, 41), and is treated as

Oaj1.

∆Oaj1 OSD Adjust Control Relative Characteristics1

Relative characteristics ∆Oaj1 is calculated by the equation below:

∆Oaj1 = VOUT (33) / VOUT (38),

VOUT (38) / VOUT (41),

VOUT (41) / VOUT (33).

Oaj2 OSD Adjust Control Characteristics2

Measuring condition and procedure are the same as described in Oaj1.

∆Oaj2 OSD Adjust Control Relative Characteristics2

Measuring condition and procedure are the same as described in ∆Oaj1.

Oaj3 OSD Adjust Control Characteristics3

Measuring condition and procedure are the same as described in Oaj1.

∆Oaj3 OSD Adjust Control Relative Characteristics3

Measuring condition and procedure are the same as described in ∆Oaj1.

VthOSD OSD Input Threshold Voltage

Reduce the SG6 input level gradually, monitoring output. Measure the SG6 level when the output reaches 0 V.

The measured value is called VthOSD.

VthBLK OSD BLK Input Threshold Voltage

Confirm that output signal is being blanked by the SG6 at the time.

Monitoring to output signal, decreasing the level of SG6. Measure the top level of SG6 when the blanking period is

disappeared. The measured value is called VthBLK.

HBLK1 Retrace BLK Characteristics1

Measure the amplitude output is blanked by the SG7 at OUT (33, 38, 41).

The measured value is called VOUT (33, 38, 41), and is treated as HBLK1.

VthRET Retrace BLK Input Threshold Voltage

Confirm that output signal is being blanked by the SG7 at the time.

Monitoring to output signal, decreasing the level of SG7. Measure the top level of SG7 when the blanking period is

disappeared. The measured value is called VthRET.

SS-NV SOG Input Maximum Noise Voltage

The sync's amplitude of SG4 be changed all white into all black, increase from 0 VP-P to 0.02 VP-P. No pulse output

permitted.

SS-SV SOG Minimum Input Voltage

The sync's amplitude of SG4 be changed all white or all black, decrease from 0.3 VP-P to 0.2 VP-P. Confirm no

malfunction produced by noise.

REJ03F0194-0201 Rev.2.01 Mar 31, 2008

Page 15 of 26

Share Link: