
79
Table A-3 V.35 Interface Specifications
Characteristics Specifications
Balanced Drivers
Voltage Swing ± 0.55 V (± 20%) into
100 Ω resistive load at
< 0.2 VDC offset
Source Impedance 50 Ω (± 10%)
Rise Time ± 10% of UI to
minimum of 40 ns
Balanced Receivers
Load Impedance 100 Ω (± 10%)
Resistance from shorted
terminals to ground
150 Ω (± 10%)
Differential Input Voltage > ± 0.2V
Unbalanced Drivers (RS-232/V.28)
Output Voltage 10.0 V peak (± 0.5 V)
Output Impedance 300 Ω minimum
Slew Rate 30 V per µsec maximum
Short Circuit Current 12 mA maximum
Mark Voltage (1 or Off) 0.0 V maximum
Space Voltage (0 or On) + 5.0 V minimum
Unbalanced Receivers (RS-232/V.28)
Input Voltage ± 25 V maximum
Load Impedance 3000 Ω–7000 Ω
Mark Voltage (1 or Off) 0.0 V maximum
Space Voltage (0 or On) + 2.0 V minimum
A
CD
E
KL
F
HJ
P
R
U
YZ
V
T
X
MN
S
W
AA BB
CC DD
EE
FF
HH
JJ
KK
LL
NNMM
B
igure A-1 Winchester-type Connector
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