M52742ASP

REJ03F0192-0201 Rev.2.01 Mar 31, 2008

Page 13 of 26

OBLK OSD BLK Characteristics

Output voltage-Black level voltage of "High" section of SG6 is calculated. The calculated value is called VOUT (29,

32, 35), and is treated as OBLK.

∆OBLK OSD Relative Characteristics

Relative characteristics ∆OBLK is calculated by the equation below:

∆OBLK = VOUT (29) - VOUT (32),

VOUT (32) - VOUT (35),

VOUT (35) - VOUT (29)

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 (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 Noise Voltage

permitted.

SS-SV SOG Minimum Input Voltage

malfunction produced by noise.

VSH Sync Output High Level

Measure the high voltage at SyncOUT. The measured value is treated as VSH.

VSL Sync Output Low Level

Measure the low voltage at SyncOUT. The measured value is treated as VSL.