NEC MultiSync V520 Service Manual page 63

1. V-Height (Pin-2):
The amplitudes of the +V and –V drive currents are controlled by means of the 0V to 4V voltage of this
pin. The current can be raised by raising by raising the voltage. The control range is approximately 1.8 to
1.
2. 4V CAP (Pin 3):
4 V CAP (capacitor), 10 uF capacitor.
3. V-Sync in:
The vertical synchronization input is a negative TTL level pulse, and it has the function of locking the
vertical oscillator. The pulse has a minimum width of approximately 200 nS.
4. 8V CAP (Pin 5):
8V CAP (capacitor), 100uF capacitor.
5. V-Dyn Height (Pin 6):
The amplitude of the driving currents of the voltages +V and –V are controlled by means of the 3V to 4V
voltage of this pin.
6. H-Dyn Height (Pin 9):
This output is expressed by the sum of the vertical ramp and the parabola resulting from that ramp. The
amplitude and the polarity of the ramp signal is controlled by H TRAP CNTRL (Pin 11), and the amplitude
and polarity of the parabola is controlled by E-W PIN CNTRL (PIN 10), both in the DC-control mode.
7. E-W PIN CNTRL (Pin 10):
This is the E-W direction pincushion deformation control function, and the voltage range is within the 0V-
4V range. When the voltage falls within the 2V-4V range, the amplitude increases, and the parabola
becomes positive. On the other hand, when the voltage falls within the 2V-0V range, the parabola be-
comes negative.
8. TRAP CNTRL (Pin 11):
This is the trapezoid control function, and the voltage is within the 0V-4V range. When the voltage falls
within the 2V-4V range, the amplitude increases, and the ramp becomes positive. On the other hand,
when the voltage falls within the 0V-2V range, the ramp becomes negative.
9. Parallelogram control (Pin 12):
The voltage is within the 0V to 4V range. When the voltage falls within the 2V-4V range, the ramp, the
ramp becomes positive.
One the other hand, when the voltage falls within the 0V-2V range, the ramp becomes negative.
10.Bow shape control (Pin 13):
The voltage is within the 0V-4V range. When the voltage falls within the 2V-4V range, the parabola
becomes positive. On the other hand, when the voltage falls within the 0V-2V range, the parabola be-
comes negative.
60