6 Functional Description of the Ethernet Modules
6-22
6.4.4 Technical data
General features
Weight: around 150 g without buffer battery
around 170 g with buffer battery
Dimensions: 155 x 28 x 128 mm (H x W x D)
Static characteristics
Power consumption: 1.4 W (without transceiver)
max. 4.6 W (depending on transceiver)
Power supply of AUI interface:
12 V DC ± 5%,
Typical output current 250 mA
Max. ripple 100 mV
PP
Protective circuitry: Short-circuit protection circuit with current
delimiter
Medium: Depending on connected transceiver
Max. segment length: Depending on medium
Max. number of nodes per segment: Depending on medium
Battery:
Lithium battery, 3.6 V, ≥ 950 mAh
Low battery signaling:
≤ 2.4 V
RAM and real-time clock buffering time
for PM 802F:
for PM 803F:
≥ 1.5 years
≤ 0 hours
Dynamic characteristics
Transmission rate: 10 Mbit/s
Data retention through battery buffering is only provided by the CPU
board PM 802F.
Use the Ethernet module EI 812F in order to achieve battery buffering
for the CPU board PM 803F.
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