Specifications

B-12 System Specifications
Random Access
— 85 ms typical (max 32X)
— 110 ms typical (max 32X): including latency
Data Buffer Capacity — 128 Kbytes
Spin up, spin down, eject time
— Spin up time — 4 sec
— Spin down time — 4 sec
— Eject time — 2.0 sec typical
Load time — 1.5 sec typical.
Voltage tolerance — +5V DC +/-5%; +12V DC +/-5%
Temperature
— operating: 5° to 45°
— non-operating: -20° to 60°
Humidity
— operating: 10% to 80% (non-condensing)
— non-operating: 5% to 90% (non-condensing)
Dimensions — H x W x L: 41.5 x 146 x 201 mm max
Weight — 0.958 Kg
NEC 32X CD-ROM drive
Model CDR-1900A/PBM
Capacity — 656 Mbytes (Mode 1), 748 MBytes (Mode 2)
Blocks per disk — 336,150
User data/block
— 2048 Bytes, Mode 1 and Mode 2 Form 1
— 2336 Bytes, Mode 2
— 2328 Bytes, Mode 2 Form 2