A
APPPPEEN
ND
DIIX
X
B
B
SPECIFICATIONS
Standard:
IEEE 802.3 compliant
Connectors:
DB-15 male on AUI port, BNC connector for
connection to 10Base2 coax medium
Collision Parameters: Turn on delay: approx. 7 bits; turn off delay:
max of 20 bits; pulse width: 35-70nS
Jabber Timer Parameters: When the transmitter operates
continuously for approx. 40 mS, the
jabber time turns the transmitter off to
prevent lock-up of the network due to
the jabbering of one station; after a
500mS pause, the transmitter is put
into service again, although it only
transmits when required
Jabber timeout: 20 - 150mS
Jabber reset timeout: 250 - 750mS
Characteristic Impedance: 50+/- 2 ohms (average)
Maximum Segment Thin Coax Length: 185m (600 feet)
Minimum Length Coax Cable Section: 0.5m
Minimum Spacing Between MAUs: 0.5m
Maximum Number of MAUs on a Cable Segment: 30
Power Supply: Supplied via the DB-15 connector on the
AUI connection: pin 13 - Voltage Plus, pin 6
- Voltage Common
Temperature Range: 0-60°C (32-140°F)
Altitude: 0-15,000 feet (0 - 4,500 meters)
Humidity: 5 to 95% noncondensing
Dimensions: 2.25”L x 1.69”H x 0.75”W
Weight: 1.3 oz
6
A
APPPPEEN
ND
DIIX
X
A
A
SQE
FEATURE
The SQE feature verifies that the Model 2102 transmits packets
correctly: After the node sends each packet, the Model 2102 sends a
pulse back to the node verifying that the Model 2102 has transmitted
the packet correctly. If the Model 2102 is connected to an interface
card, the SQE feature should be ON (the down position). If the Model
2102 is connected to a hub or repeater, the SQE switch should be OFF
(the up position).
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