DIRECTV D11 Installation Guide - Page 40

DIRECTV Set-Top Box Information for the Installer Table 8-2: Input Drive Characteristics Parameter Space voltage Mark voltage Terminating impedance resistance Capacitance Specification +3.0 volts min, +25 volts max -25 volts min, -3.0 volts max 6K < R < 7K resistive to ground C < 150 pf 8.4 Low-Speed Output Characteristics 8.4.1 Output Drive Characteristics (Pin 2) The STB output drive characteristics are as shown in Table 8-3. Table 8-3: Output Drive Characteristics Parameter Space voltage Mark voltage Terminating impedance resistance Capacitance Specification +5.3 volts max at Ioh = 0 mA, +3.0 volts min -6.0 volts min at Iol = 0 mA, -3.0 volts max, 3k < R < 7k resistive to ground C < 2500 pF 8.4.2 Passive Outputs (Pins 1, 6, 8, and 9) (Optional) If the data port optional pins one (1), six (6), eight (8) and nine (9) are provided, the passive outputs will be as shown in Table 8-4. DIRECTV, Inc. Version 2.2 Page 40 of 42 March 5, 2008 DTV-MD-0058