Interface Characteristics; Table C-5. Eia-530 Interface Transmitter - Motorola MVME2603-1121A Installation And Use Manual

EIA-530 Connections

Interface Characteristics

C
Table C-5. EIA-530 Interface Transmitter Characteristics
Differential output voltage (absolute, with
100Ω load)
Open circuit differential voltage output
(absolute)
Output offset voltage (with 100Ω 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 100Ω, 15pF load)
C-8
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:
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 50Ω 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).
EIA-530 interface transmitter and receiver parameters applicable to
the MVME2603/2604 are listed in the following tables.
Parameter
Value
Minimum Maximum
2.0
6.0
2.0
±180
±100
15
Unit
V
V
V
mA
µA
ns