Electrical Characteristics - Pioneer DRM-5004X User Manual

SCSI Specifications
SCSI Physical Characteristics
Single-end drivers and receivers are implemented in each SCSI device of
the DRM-5004X CD-ROM Jukebox. All devices are daisy chained at the
shipment, and each end of the internal SCSI cable is connected to the
SCSI connector A and B. The other SCSI connectors are left open at the
shipment. The length of internal SCSI cable is 4.5 meters, so external
SCSI cable can use the length not exceeding 1.5 meters.
All assigned signals shall be terminated with 220 W to + 5 VDC (nomi-
nal) and 330 W to ground at each end of the cable. Generally, the
exclusive SCSI terminate module is used for termination.

Electrical Characteristics

(1) Output Characteristics
Each signal driven by a SCSI device shall have the following output
characteristics when measured at the SCSI device's connector.
Signal assertion:
Minimum driver output
capability:
Signal negation:
(2) Input Characteristics
Each signal received by a SCSI device shall have the following input
characteristics when measured at the SCSI device's connector.
Signal true:
Minimum total input load:
Signal false:
Minimum input hysteresis:
Pioneer DRM-5004X CD-ROM Jukebox User's Guide
0.0 VDC to + 0.4 VDC
48 mA (sinking) at + 0.5 VDC
+ 2.5 VDC to + 5.25 VDC
0.0 VDC to + 0.8 VDC
- 0.4 mA at + 0.4 VDC
+ 2.0 VDC to + 5.25 VDC
+ 0.2 VDC
Appendix B
TP #120 v .1.0 2/95
B
B - 1