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Detailed Specifications: Embedded USB Serial
Adpaters
Bus Interface: USB 1.1, USB 2.0 compatible
OS Support: Windows 98/Me/NT/2000/XP/Vista, Linux, SunRay Server (QSU-100-EMB
only), OS/2 (QSU/ESU-100-EMB only. Available from IBM to Software Choice
subscribers)
Data Rate*: 230.4 kbps max
Actual baud rates depend on many external factors including hardware flow
control, horsepower of the host computer, quality and length of cables,
and whether data flow is continuous or "bursty."
Learn more about max data rates
| Model |
#Simultaneously Operating Ports |
Typical Max. Data Rate |
QSU-100-EMB
|
1,2 |
230.4k bps |
| 3,4 |
115.2k bps |
Serial Ports Provided:
QSU-100-EMB: 4 RS-232 ports
Communication Modes for RS-422/485: Full-duplex, Half-duplex using
RTS, Half-duplex using DTR, Half-duplex automatic transmitter control
(learn
more about communication modes)
USB Ports Required: 1
UARTs: 16550 UARTs with 16-byte FIFOs (1 per port)
RS-232 Transceiver: SP211HB
RS-232 Output:
Voltage Swing: ±5V (min), ±7V
(typ)
RS-232 Input:
Voltage Range: -15V (min), +15V (max)
Input Threshold Low: 0.8V (min), 1.2V (typ)
Input Threshold High: 2.4V (max), 1.7V (typ)
RS-422/485 Transceiver: MAX491 or compatible
Differential Driver Output (50 W
Load): +2V (min)
Differential Driver Output (27 W
Load): +1.5V(min), +5V (max)
High Input: +2V (min)
Low Input: +0.8V (max)
Driver Rise/Fall Time: 5ns (min), 15ns (typ),
25 ns (max)
Driver Input to Output Delay: 10ns (min), 30ns
(typ),60ns (max)
Receiver Input to Output Delay: 20ns (min),
90ns (typ), 150ns (max
Surge Suppression: Surge suppressor applied to each line that
is capable of sustaining up to 40A peak, 8 x 20µs transient surges,
a clamping voltage of 30V (15.5V for RS-422/485) and a peak energy dissipation
of 0.1 Joules.
Environment:
Operating: 0°C to 70°C
Storage: -50°C to 80°C
Humidity: 10% to 90%
Power Requirements:
Bus-powered device, no external power supply
required.
Suspend power: < 500 µA
Unconfigured power: < 100 mA
Configured Power: < 500 ma
Size:
QSU-100-EMB: 3.9 oz, 0.49"H x 6.99"W
x 4.00"D--board layout
QSU-200/300-EMB: 4.1 oz, 0.49"H x 6.99"W
x 4.00"D--board layout
Connectors: DB-9 male for RS-232 (see
connector pinout) DB-9 female for RS-422/485
(see
connector pinout)
Certifications: CE, FCC Class B
Sales Information:
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