B&B Electronics DSC-200_300 - Datasheet User Manual
Page 3
Documentation Number xSC-100_200-300x_0813 - pg. 3/3
RS-422/485 Board Specifications
Bus Interface:
32-bit, 33MHz PCI Bus spec. 2.1 compliant
OS Support:
Win 95/98/Me/NT/2000/XP, Linux, OS/2, DOS
Data Rate:
921.6 kbps (max) all boards
Ports:
DSC series:
2
QSC series:
4 (each configurable as RS-422 or RS-485 for full or half duplex communication)
UARTs:
16750 UARTs with 64-byte FIFOs (1 per port)
Transceiver:
Max 491 or compatible
Drivers:
Differential Voltage:
+/- 2V (min)
Transition Time (TLH):
15ns (typ), 40 (max)
Transition Time (THL):
15ns (typ)
Receive Buffers:
Differential Input Threshold: +/- 0.2V
Voltage Range:
-7V to +12V Common Mode Input
Transition Time (THL-TLH): 15ns (typ)
Environment:
Operating:
0° to 70° C
Storage:
-50° to 80° C
Humidity:
10% to 90%
Power Requirements:
DSC series:
320mA @+5V
QSC series:
320mA @+5V
Surge Suppression Option (IND indicator in the model/part #)
Surge suppressor on each line that is capable of sustaining up to 40A 20ms peak transient surges, a clamping voltage
of 30V, and a peak energy dissipation of 0.1 Joules.
Size:
DSC series:
5.0 x 3.7 in
QSC series:
5.4 x 3.8 in
Connectors:
DSC-200/300 series: 2 DB-9 female
QSC-200/300 series:
DB 37 female or cable with 4 DB-25 male
Certification:
CE, FCC Class B
Order Number:
Description:
DSC-200/300:
two port RS-422/485 board
DSC-200/300IND:
two port RS-422/485 with surge suppression
QSC-200/300:
four port RS-422/485 board
QSC-200/300IND:
four port RS-422/485 with surge suppression