Verilink PRISM 3030 (34-00208.L) Product Manual Manual do Utilizador descarregar pdf (Página 91)

Note: Only circuits serviced by the unit are listed.

The RS-232 interface is only recommended for data rates of 128 kHz and below.

The connector is a standard female DB-25.

All unbalanced bipolar inputs and outputs meet the physical and electrical specifications of

ITU V.28.

Table A-5 RS-232 Interface Specifications

Characteristics Specifications

Line Drivers

Output Voltage ±10 Volts maximum

Mark Voltage (Off) <−5 V (±0.5 V) into 3000 Ω

Space Voltage (On) >+5 V (±0.5 V) into 3000 Ω

Output Impedance 300 Ω minimum

Short Circuit Current 12 mA maximum

Line Receivers

Input Voltage ±25 V maximum

Load Impedance 3000 Ω minimum

Mark Voltage (Off) −25 to 0 VDC

Space Voltage (On) +2 to +25 VDC

Table A-6 RS-449/422 Interface Specifications

Characteristics Specifications

RS-449/422 Drivers

Source Impedance <100 Ω

Differential Output Voltage between 2 to 6 VDC offset at 2.5V (< +0.5V

and >−0.5 V) optional for MIL-STD-114

Short Circuit Current <150 mA

Output Rise Time <20 nanoseconds

RS-449/422 Receivers

Impedance 100 Ω terminated

Differential Input Voltage >+0.5 V or <−0.5 V

Data

Data Mark (binary 1 or OFF state) A terminal more negative than the B terminal

Data Space (binary 0 or ON state) A terminal more positive than the B terminal

1 2 ... 86 87 88 89 90 91 92 93 94 95 96 ... 138 139

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Verilink PRISM 3030 (34-00208.L) Product Manual Manual do Utilizador Página 91