M52743 Mitsubishi, M52743 Datasheet - Page 9

• Manufacturer Part Number: M52743
• Description: I 2 C BUS CONTROLLED 3-CHANNEL VIDEO PREAMPLIFIER
• Manufacturer: Mitsubishi

P
Measure the pedestal voltage at 25 C. The measured value is
called PDC1.
Measure the pedestal voltage at temperature of -20 C.
The measured value is called PDC2.
Pedestal voltage temperature characteristics 1 is calculated by the
equation below:
P
Measure the pedestal voltage at 25 C. The measured value is
called PDC1.
Measure the pedestal voltage at temperature of 75 C.
OTr OSD pulse characteristics1
Measure the time needed for the output pulse to rise from 10% to
90% (OTR) with an active prove.
OTf OSD pulse characteristics2
Measure the time needed for the output pulse to fall from 90% to
10% (OTF) with an active prove.
Oaj1 OSD adjust control characteristics1
Measure the amplitude output at OUT (29, 32, 35). The measured
value is called VOUT (29,32,35), and is treated as Oaj1.
Relative characteristics Oaj1 is calculated by the equation below:
Oaj2 OSD adjust control characteristics2
Measuring condition and procedure are the same as described in
Oaj1.
Measuring condition and procedure are the same as described in
Oaj3 OSD adjust control characteristics3
Measuring condition and procedure are the same as described in
Oaj1.
Measuring condition and procedure are the same as described in
9
The measured value is called PDC3.
Pedestal voltage temperature characteristics 2 is calculated by the
equation below:
Oaj1 OSD adjust control relative characteristics1
Oaj2 OSD adjust control relative characteristics2
Oaj1.
Oaj3 OSD adjust control relative characteristics3
Oaj1.
DCH
DCL
Pedestal voltage temperature characteristics2
Pedestal voltage temperature characteristics1
P
P
Oaj1= VOUT (29)/VOUT (32),
DCH
DCL
=PDC1-PDC3
=PDC1-PDC2
VOUT (32)/VOUT (35),
VOUT (35)/VOUT (29)
I
2
C BUS CONTROLLED 3-CHANNEL VIDEO PREAMPLIFIER
VthOSD OSD input threshold voltage
Reduce the SG6 input level gradually, monitoring output. Measure
the SG6 level when the output reaches 0V. 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 (29,
32, 35). The measured value is called VOUT (29, 32, 35), and is
treated as HBLK1.
HBLK2 Retrace BLK characteristics2
Measure the amplitude output is blanked by the SG7 at OUT (29,
32, 35). The measured value is called VOUT (29, 32, 35), and is
treated as HBLK2.
HBLK3 Retrace BLK characteristics3
Measure the amplitude output is blanked by the SG7 at OUT (29,
32, 35). The measured value is called VOUT (29, 32, 35), and is
treated as HBLK3.
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 noize voltage
The sync's amplitude of SG4 be changed all white into all black,
increase from 0V
SS-SV SOG minimum input voltage
The sync's amplitude of SG4 be changed all white or all black,
decrease from 0.3V
by noise.
VSH Sync output hi level
Measure the high voltage at SyncOUT. The measured value is
treated as VSH.
VSL Sync output lo level
Measure the low voltage at SyncOUT. The measured value is
treated as VSL.
M52743SP/M52744SP
P-P
P-P
to 0.02V
to 0.2V
MITSUBISHI ICs (Monitor)
P-P
P-P
. No pulse output permitted.
. Confirm no malfunction produced