Vizio L37 Service Manual page 27

Analog HD2
a. Frequency H: 15.734KHz V: 60Hz (NTSC-480i)
b. Signal level Y: 1Vp-p Pb: ±0.350Vp-p Pr: ±0.350Vp-p
c. Impedance 75Ω
RCA-type (Yellow) Composite Video Connector(AV1,AV2,AV3)
a. Signal Level Video (Y+C): Analog 1Vp-p/75
b. Frequency H: 15.734KHz V:60Hz (NTSC)
CONFIDENTIAL – DO NOT COPY
H: 31KHz V: 60Hz (NTSC-480p)
H: 45KHz V: 60Hz (NTSC-720p)
H: 33KHz V: 60Hz (NTSC-1080i)
Sync (H+V): 0.3V below Video (Y+C)
Page 5-6
File No. SG-0176