CP-520/520A/520F Service Manual

applied to obtain sufficient selectivity (the sound input can be activated by means of the setting of CMB2-CMB0 bits in subaddress 4AH). The setting to the wanted frequency is realised by means of the control bits FMA, FMB and FMC in the control bit 33H.

From the output status bytes it can be read whether the PL Lfrequency is inside or outside the window and whether thePLL is in lock or not. With this information it is possible to make an automatic search system for the incoming sound frequency. This can be realised by means of a software loop which switches the demodulator to the various frequencies and then select the frequency on which a lock condition has been found.

The amplitude deemphasis output signal changed with 6dB by means of the AGN bit. In this way output signal differences between the 4.5 MHz standard (frequency deviation25 kHz) and the other standards (frequency deviation50 kHz) can be compensated.

5.2.4 Audio input selector and volume contro

5.2.4.1 STEREO AND AV STEREO VERSIONS

The audio input selector circuit has 4 external stereo inputs, a stereo output for SCART/CINCH and stereo outputs for headphone and audio power amplifiers. The selection is made with the bits SAS2/0, SO2/0 and HPO2/0. AV stereo versions without Audio DSP have no headphone output. The input signal selection for the volumecontrolledaudiooutputsisrealisedbytheHPO2/0 bits.

The gain from an external audio input to each of the (non-controlled) analog output is 0 or +6dB(controlled by the DSG bit). A supply voltage of 5V allows input and output amplitude of 1VRMS full scale, as required to comply with the SCART specification, the audio supply voltage must be 8V. In that case the gain of the audio amplifier must be doubled. This can be realised with the DSG bit in subaddress 32H.

The circuit contains an analogue stereo volume control circuit with a control range of about 70dB. This volume control circuit is used for the headphone channel (stereo versions with Audio DSP) or for the main channel (AV stereo versions without Audio DSP). The analogue control circuit also contains an Automatic Volume Levelling(AVL) function. When this function is activated it stabilises the audio output signal to a certainl evel so that big fluctuations of the output power are prevented.

5.2.4.2 MONO VERSIONS

The audio input selector circuit has 4 inputs for mono signals. The selection is made with the HPO2/0 bits.

The circuit contains an analogue volume control circuit with a control range of about 70dB and an AVL circuit.

5.2.5 CVBS and Y/C input signal selection

5.2.5.1 ALL VERSIONS

DTV R&D Europe

36

Page 36 Page 38
Page 37
Image 37
Daewoo DTZ-2881/28W8 Audio input selector and volume contro, Stereo and AV Stereo Versions, Mono Versions, ALL Versions
Page 36 Page 38

DTZ-2481, DTZ-29U7/U3, DTC-21Y1/21Y2, DTY-21U7/21B4, DTY-2880/28W5 specifications

The Daewoo DTC-20T2, DTY-28A8, DTY-28A6, DTY-28A7, DTZ-2881/28W8, DTY-25G6/25G7, and DTY-2880/28W5 represent a range of innovative and feature-rich vehicles that reflect Daewoo's commitment to quality and advanced technology. Each model combines sleek design with performance excellence, appealing to a wide range of consumers.

Starting with the DTC-20T2, this compact car offers a combination of efficiency and agility. Its lightweight design enhances fuel economy while maintaining stability on the road. Equipped with a state-of-the-art engine, the DTC-20T2 delivers a responsive drive, making it ideal for city commuting and weekend getaways.

The DTY-28A8 is known for its spacious interior and comfort features. It boasts advanced infotainment systems, including touch screens and smartphone connectivity, catering to modern drivers. Safety is paramount, with multiple airbags and advanced braking systems ensuring peace of mind on every journey.

Similarly, the DTY-28A6 and DTY-28A7 share many design elements but have unique enhancements that differentiate them. They incorporate advanced suspension systems that provide a smooth driving experience while navigating urban and rural landscapes. These models also feature high-efficiency engines that strike a balance between power and fuel consumption.

Moving to the DTZ-2881/28W8, this vehicle makes a statement with its bold design and robust performance. This model is designed with aerodynamics in mind, reducing drag and enhancing fuel efficiency. It includes innovative technologies like regenerative braking, which captures energy during deceleration, extending the vehicle's overall efficiency.

The DTY-25G6/25G7 and DTY-2880/28W5 are particularly impressive with their emphasis on versatility. These models offer various configurations and layouts to cater to different needs, whether for families or individuals. They feature expanded cargo capacity and modular seating arrangements that can accommodate both passenger and transportation requirements.

In conclusion, the Daewoo DTC-20T2, DTY-28A8, DTY-28A6, DTY-28A7, DTZ-2881/28W8, DTY-25G6/25G7, and DTY-2880/28W5 showcase a blend of performance, technology, and comfort across their varying models. From advanced safety features to innovative fuel efficiency technologies, these vehicles are tailored to meet the needs of a diverse clientele, reinforcing Daewoo’s stature in the automotive industry.
Top Page Image Contents