Commodore CDTV - Page 5

CDTV SERVICE MANUAL
1.1 SPECIFICATIONS (Continued)
REAR PORTS
Centronics parallel interface; RS-232 serial interface; External floppy disk drive interface (Amiga floppy disk drive
compatible); Hardwired alternative to IR for keyboard, mouse, joystick; 2 audio output ports (RCA type plug) (re-
quires external audio amplifier); Midi in and out
FRONT PORT
Stereo headphone jack; Port for optional personal RAM/ROM card (256K)
POWER CONSUMPTION
50W (average AC100-240V, 50/60Hz)
ENVIRONMENTAL CONDITIONS
Operating temperature 5C to 40C (non-condensing); 41F to 104F
Operating humidity 25% to 80% (non-condensing)
FRONT PANEL DISPLAY
Fluorescent (white characters on black); Time, track and volume level; Clock remains lit when unit is turned off; Display
controllable by application
FRONT PANEL CONTROLS
Power On/Off; Headphone volume Up/Down; Play/Pause; Stop; Forward/Reverse — Scan/Skip; CD/TV; Reset
TEXT MODES
80 characters/25 lines; 60 characters/25 lines; Various font sizes and types selectable; Screen colors user definable
GRAPHICS MODES
(NTSC)
320 X 200 non-interlaced
32 colors
(PAL)
320 X 256 non-interlaced 32 colors
640 X 200 non-interlaced
16 colors
640 X 256 non-interlaced
16
colors
320 X 400 interlaced
32 colors 320 X 512 interlaced
32
colors
640 X 400 interlaced
16 colors 640 X 512 interlaced
16
colors
plus overscan and HAM modes
plus overscan, HAM, etc.
CD-ROM DRIVE SPECS
Sony/Philips type CD-ROM Standard Mode 1, Mode 2
Data readout from disk
Average access time
Maximum access time
Soft read error
Hard read error
Seek error
Commands
MTBF
Standard supported
Data Capacity
153 Kbytes/sec (Mode 1); 171 Kbytes/sec (Mode 2); 2 Megabytes/sec (burst)
0.5 sec
0.8 sec
Less than 10e-9
Less than 10e-12
Less than 10e-6
CD-ROM, CD-Audio, CD + G
10,000 P.O.H.
ISO-9660
540 MegaBytes (approx.) (about 700 Amiga floppy disks)
CD AUDIO SPECS
8X Oversampling
Audio output
Frequency response
Signal/Noise
Channel Separation
Harmonie Distortion
Maximum audio capacity
Sample Rates
External 1.4VRMS, 10K OHM
4-20KHz
-92DB
-85DB
0.02% at 1 KHz
about 28 hours - AM quality
variable from CD Audio rate (44KHz) to 6KHz
Dual 16 bit D/A Converter plus 64 levels of attenuation
1-2