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904 00000213 BA7004 (Test Pattern Generator) (5-lead SIP package) BA7004  Test pattern generator

The BA7004 is a test signal generator for VCRs that can be used to tune the receiving frequency of television tuners to
the RF converter output frequency of VCRs.
When a TV is receiving a television broadcast through a VCR, the TV receiving frequency must match the RF converter
output frequency of the VCR for the broadcast image to be displayed.
Particularly for UHF-band VCRs (PAL and SECAM), when an electronic tuner is used in the VCR, the RF converter is
a multi-channel variable type, and electronic tuning is used in the television as well, it is extremely difficult to match the
channel frequencies for the two pieces of equipment. Tuning is done be connecting a test signal generator or using a
video tape with a recorded test signal and adjusting the television receiver's tuning dials.
The BA7004 has been designed to operate with a minimum number of external components and it uses a ceramic
oscillator to give an accurate video signal (horizontal sync: signal and white signal). Unlike the conventional multivibrator
method, use of the BA7004 allows the horizontal sync signal setting adjustment procedure to be eliminated which
facilitates adjustment and leads to cost savings.

* Features
1)Few external components required.
2)Provides an accurate video signal without adjustment.
3)Good temperature stability. 0.89
  
BA7004  Test pattern generator

The BA7004 is a test signal generator for VCRs that can be used to tune the receiving frequency of television tuners to
the RF converter output frequency of VCRs.
When a TV is receiving a television broadcast through a VCR, the TV receiving frequency must match the RF converter
output frequency of the VCR for the broadcast image to be displayed.
Particularly for UHF-band VCRs (PAL and SECAM), when an electronic tuner is used in the VCR, the RF converter is
a multi-channel variable type, and electronic tuning is used in the television as well, it is extremely difficult to match the
channel frequencies for the two pieces of equipment. Tuning is done be connecting a test signal generator or using a
video tape with a recorded test signal and adjusting the television receiver's tuning dials.
The BA7004 has been designed to operate with a minimum number of external components and it uses a ceramic
oscillator to give an accurate video signal (horizontal sync: signal and white signal). Unlike the conventional multivibrator
method, use of the BA7004 allows the horizontal sync signal setting adjustment procedure to be eliminated which
facilitates adjustment and leads to cost savings.

* Features
1)Few external components required.
2)Provides an accurate video signal without adjustment.
3)Good temperature stability.   Datenblatt