Handbuch / Manual
10.1.4 Timer (only SH ARC-ISA-K):
type
clock frequency
allocation
82C54 of Intel
6 MHz
Out0
→
Clk1, Out1
→
Clk2, 6 MHz time
gates enabled
10.1.5 Coaxial Interface (-K)
Data rate
Input impedance:
Input threshold:
Line termination:
Output peak voltage
Output signal 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 [1]
RG62 with Z = 93 ohm is recommended
BNC socket, decoupled to device
housing
10.1.6 RS-485/EIA-485 Interface (-R)
Data rate
Input threshold
Polarity in idle state
Line termination
DC-Biasing
Differential voltage output
Connector
19.5 kbit/s – 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
D-sub DE9F socket, Galvanic insulation
between D-sub pins and shield
10.1.7 RS485AC Interface (-RS485AC)
Data rate
Line termination
Output peak voltage
Ouput pulse shape
Cabling
Connector
2.5 Mbit/s – 10 Mbit/s
120 ohm (internal termination disabled
by default)
2.5 V typ.
Bipolarly alternating rectangular pulses
Twisted pair wire with Z = 120 ohm is
recommended
Shielded RJ45 socket
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