TA1360AFG_05 Datasheet, PDF (56/110 Pages) Toshiba Semiconductor – YCbCr/YPbPr Signal and Sync Processor for Digital TV, Progressive Scan TV and Double Scan TV

Note No.
Characteristics
P15 Light area static Yγ gain
TA1360AFG
Test Conditions
SW Mode
SW71 SW70 SW68 SW64 SW74
Test Method (Test condition: V_CC = 9 V/2 V, Ta = 25 ± 3°C)
B
B
C
A OPEN 1. Connect external power supply PS1 to #68, external power supply PS2 to TP7, and set PS2 to 0 V.
2. Set dark area static Yγ gain [1C] to 0dB [17], and light area static Yγ gain [1C] to 0dB [17].
3. Set PS1 to V₆₈ [V], and measure #12 picture period voltage VLSGOFF1 [V].
4. Set PS1 to VLGP [V], and measure #12 picture period voltage VLDGOFF2 [V].
5. Set light area static Yγ gain [1C] to MAX [14], PS1 to VLGP [V], measure #12 picture period voltage
VlSGMAX, and calculate GLASGMAX [dB] using the following equations.
VLSGMAX − VLSGOFF2 = A
VLSGOFF2 − VLSGOFF1 = B
GLSGMAX = 20 × log [B/(B − A)] [dB]
#12 voltage [V]
VLSGMAX
VLSGOFF2
ON
VLSGMAX − VLDGOFF2 = A
VLSGOFF1
V₆₈
OFF
VLGP
VLSGOFF2 − VLSGOFF1 = B
#68 voltage [V]
V₆₈ + 0.7 V
(100IRE)
6. Set light area static Yγ gain [1C] to MIN [16], PS1 to VLGP [V], measure #12 picture period voltage
VLSGMIN, and calculate GLASGMIN [dB] using the following equations.
VLSGMIN − VLSGOFF2 = C
VLSGOFF2 − VLSGOFF1 = B
GLSGMIN = 20 × log [B/(B − C)] [dB]
#12 voltage [V]
VLSGMIN
ON
VLSGMIN − VLDGOFF2 = C
VLSGOFF1
V₆₈
OFF
VLGP
56
VLSGOFF2 − VLSGOFF1 = B
#68 voltage [V]
V₆₈ + 0.7 V
(100IRE)
2005-08-18