Low-Speed Output Characteristics; Output Drive Characteristics (Pin 2); Passive Outputs (Pins 1, 6, 8, And 9) (Optional); Table 8-2: Input Drive Characteristics - DirecTV D10 Installation Manual

DIRECTV Set-Top Box Information for the Installer
Parameter
Space voltage
Mark voltage
Terminating impedance
resistance
Capacitance

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.
Parameter
Space voltage
Mark voltage
Terminating impedance
resistance
Capacitance

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

Table 8-2: Input Drive Characteristics

+3.0 volts min, +25 volts max
-25 volts min, -3.0 volts max
6K < R < 7K resistive to ground
C < 150 pf

Table 8-3: Output Drive Characteristics

+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
Page 40 of 42
Specification
Specification
March 5, 2008
DTV-MD-0058