We are looking for the digital cable set-top boxes with the following features and specifications. Features: 175 MHz MIPS 32 CPU with 8K instruction and 8K data caches. High speed, unified memory design with support for up to 64 Mbytes of DDR SDRAM. 64 PID filters individually assignable to in-band or out-of band streams. Video decoder with enchanced VBI data processing capability. Analog/Digital video scaling (picture in graphics). High resolution graphics with support for multiple planes. MPEG-2 Digital Video Processor. MPEG Layer-II / Dolby Digital (AC-3) audio processor. ITU standard 64/128/256 QAM/FEC/enchanced adaptive equalizer. On-board real-time RF return (256 Kbps). Clear Analog Channel Processor with BTSC Decoder. 47-860 MHz tuner. Digital diagnostics. Frequency agile 2.048 Mbps out-of band data receiver. Pan Scan (4:3) and Wide screen (16x9) video support. Full feature accesss from front panel. Specifications: Sl.No. Parameters Requirements 1 Electrical Specifications: i) Input Voltage Range ii) Frequency 90-270 V AC 50 Hz ? 5 Percent 2 Bypass of analog free to air RF signal The STB shall have the capability of bypassing free to air RF signal 3 Connectors: i) RF Input ii) Output Video iii) Output Audio (L & R) iv) RF Output 75 ohms impedance, female connector 1 x RCA type 2 x RCA type 75 ohms impedance, female connector 4 RF characteristics at cable system outlet: i) System ii) Modulation iii) RF carrier signal iv) Carrier level differences between distributed TV channels (47 to 862 MHz range) v) Amplitude response within a TV Channel vi) Lowest carrier to interference ratio vii) Cross modulation viii) Digital video RF characteristics PAL B (for VHF), PAL G (for UHF) AM-VSB 60dBu V, Min 57dBu V, Min for systems with 8 MHz 80dBu V, Max 20 channels 12dB, Max Variation (pp): 8dB, Max Slope of variation: 1.5dB/MHz, Max 35dB, Min for 64 QAM 46 + 10 1g (N-1), N= No. of Channels Constellations of 16 QAM, 64 QAM and 256 QAM are desirable. Other constellation (32 QAM and 128 QAM) may also be used. The constellations used shall be automatically detected. 5 Channel tuner performance characteristic: i) RF input level ii) Input frequency range iii) RF input channel bandwidth iv) RF input impedance v) RF input return loss vi) Frequency assignment download Same as mentioned in RF characteristics at cable system outlet in (4) 47 to 862 MHz 7 MHz 75 ohms 6 dB, Min Optional 6 RF re-modulator output: i) Modulation format ii) RF output channel iii) RF output level iv) Carrier to noise ratio PAL B (for VHF), PAL G (for UHF) VHF Channel ?; Agile/UHF 60dBu V, Min 80dBu V, Max 44dB, Min 7 Remote control Essential 8 Operating temperature range 0 deg. C to 50 deg. C 9 Operating humidity range 5 percent to 95 percent (non-condensing) 10 Finger printing Essential