JVC Model 200 User Manual

Page 68

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Chapter 2---System Description

I

8

TP_KEY

Data for adjustment of top/bottom keystone

I

8

TP_KEY_BAL

Data for adjustment of top/bottom keystone
balance

I

1

/RASTER_FIL

Control line for the raster fill option, low = raster
fill is active

I

1

/CONV_ENABLE

Convergence enable line low = enabled
convergence

O

1

ILA_LOCKED

Status line for the lock indication of the PLL of the
ILA section with high = locked PLL

O

1

/CD_OK

Convergence board status line. Low =
operational C/D Board, High = Nonoperational
C/D Board.

O

2

CD_MODEL

Revision of C/D Board

The Convergence/Deflection Board I/O

This section describes the inputs to and outputs from the C/D
Board. The I/O descriptions are arranged by the source and
destination of the signal. The assembly communicated with is the
primary heading of each group of signals. Those signals are
subdivided into inputs and outputs. Input refers to an Input to the
C/D Board, output refers to an output from the C/D Board.

Table 2-13. Convergence Deflection I/O signals

System Controller Board

INPUTS DESCRIPTION
IIC_CLK

IIC clock line. Unidirectional clock line for control of synchronous
data transfer over the IIC bus interface.

IIC_DATA

IIC data line. Bidirectional serial line for synchronous data transfer
between the System Controller Board and the C/D Board.

X_RED_
CONV

Red X convergence waveform. The amplitude for full scale
correction is about 1 VPP.

X_GRN_
CONV

Green X convergence waveform. The amplitude for full scale
correction is about 1 VPP.

X_BLU_
CONV

Blue X convergence waveform. The amplitude for full scale
correction is about 1 VPP.

Y_RED_
CONV

Red Y convergence waveform. The amplitude for full scale correction
is about 1 VPP.

Y_GRN_
CONV

Green Y convergence waveform. The amplitude for full scale
correction is about 1 VPP.

Y_BLU_
CONV

Blue Y convergence waveform. The amplitude for full scale
correction is about 1 VPP.

CORR_
SYNC

Square wave HCT level synchronization signal for horizontal axis

OUTPUTS DESCRIPTION
/IIC_SINT

IIC interrupt line. Convergence board does not initiate any IIC
interrupt.

2-54

Model 200 Service Manual

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