SOHARD SH ARC-PCIu Handbuch Seite 29

11.1.2 Coaxial Interface (-K, KOAX)
Data rate
Input impedance:
Input threshold:
Line termination:
Output peak voltage
Output signal shape
Cabling
Connector
11.1.3 RS-485/EIA-485 Interface (-R, RS485)
Data rate
Input threshold
Polarity in idle state
Line termination
DC-Biasing
Differential voltage output
Cabling
Connector
11.1.4 RS485AC Interfaces (RS485AC-RJ45, RS485AC-BNC)
Data rate
Line termination
Output peak voltage
Ouput pulse shape
Cabling
Connector
2.5 Mbit/s
> 10 kohm (at f= 5 MHz)
> 2.5 Vpp
93 ohm (no internal termination)
min. 16 V (on terminated 93 ohm line)
Sine dipulse 200 ns according to
ANSI/ATA 878.1 Local Area Network:
Token Bus (2.5 Mbps), ATA 1999,
(www.arcnet.com)
RG62 with Z = 93 ohm is recommended
BNC socket, decoupled to device
housing
up to 10 Mbit/s
+/− 200 mV
positive
115 ohm (internal termination disabled
by default)
240 ohm +5 V / 240 ohm 0 V (biasing
disabled by default)
min. 3.0 V
Twisted pair wire with 115 ohm line
impedance recommended
D-sub DE9F socket, galvanic insulation
between D-sub pins and shield
2.5 Mbit/s – 10 Mbit/s
- RJ45: 120 ohm (internal termination
disabled by default)
- BNC: no internal termination
2.5 V typ.
Bipolarly alternating rectangular pulses
-RJ45: Twisted pair wire with 115 ohm
line impedance recommended
-BNC: Coaxial cable (properly
terminated)
-RJ45: Shielded RJ45 socket
-BNC: BNC socket
Handbuch / Manual
29