Ross VEA-8707A, User Manual

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3–6 • User Controls VEA-8707A User Manual (Iss. 01)
Notes on Clamping
This section provides additional information when setting the clamping speed and the resulting
clamp time.
Clamping Speed and Time
Table 3.2 lists typical clamp times for a 100mV step. For larger steps up to 500mV, clamp times
increase linearly at 0.5msec/100mV and 1.1msec/100mV for FAST and NORM settings
respectively. Note that HD and Format changes may take longer as the card re-synchronizes.
Table 3.2 Clamping Speed and Time Values
Clamping Speed (JP4) Resulting Clamp Time
FAST
0.5msec
NTSC/PAL: 8 lines
1080i TLS: 17 lines
720p TLS: 22 lines
NORM
1.1msec
NTSC/PAL: 17 lines
1080i TLS: 37 lines
720p TLS: 49 lines