Table C-5. Eia-530 Interface Transmitter Characteristics - Motorola MVME2700 Series Installation And Use Manual

Interface Characteristics
In specifying parameters for serial binary data interchange between DTE
and DCE devices, the EIA-530 standard assumes the use of balanced lines,
except for the Remote Loopback, Local Loopback, and Test Mode lines,
which are single-ended. Balanced-line data interchange is generally
employed in preference to unbalanced-line data interchange where any of
the following conditions prevail:
EIA-530 interface transmitter and receiver parameters applicable to the
MVME2700 are listed in the following tables.

Table C-5. EIA-530 Interface Transmitter Characteristics

Differential output voltage (absolute, with 100
load)
Open circuit differential voltage output
(absolute)
Output offset voltage (with 100 load)
Short circuit output current (for any voltage
between 7V and +7V)
Power off output current (for any voltage
between 7V and +7V)
Output transition time (with 100 , 15pF load)
http://www.mcg.mot.com/literature
The interconnection cable is too long for effective unbalanced
operation.
The interconnection cable is exposed to extraneous noise sources
that may cause an unwanted voltage in excess of 1V measured
differentially between the signal conductor and circuit ground at the
load end of the cable, with a 50 resistor substituted for the
transmitter.
It is necessary to minimize interference with other signals.
Inversion of signals may be required (e.g., plus polarity MARK to
minus polarity MARK may be achieved by inverting the cable pair).
Parameter
Serial Interconnections
Value
Minimum Maximum
6.0
2.0
180
100
15
C
Unit
V
V
V
mA
A
ns
C-7