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© National Instruments Corporation 5 NI 6584R User Guide and Specifications
Tables 1 and 2 show the pin assignments for each of the eight port connectors on the
NI VHDCI-to-Eight DB9 cable. Two channels are assigned to each port.
Note The pinouts for the port connectors are the same for both terminated and unterminated devices.
Table 1. Pin Assignments on Each Port (Full Duplex)
Connector Pin Port 1 Port 2 Port 3 Port 4 Port 5 Port 6 Port 7 Port 8
1 GND GND GND GND GND GND GND GND
2 RX_1+ RX_3+ RX_5+ RX_7+ RX_9+ RX_11+ RX_13+ RX_15+
3 TX_1+ TX_3+ TX_5+ TX_7+ TX_9+ TX_11+ TX_13+ TX_15+
4 RX_0+ RX_2+ RX_4+ RX_6+ RX_8+ RX_10+ RX_12+ RX_14+
5 RX_0– RX_2 RX_4– RX_6– RX_8– RX_10– RX_12– RX_14–
6 RX_1– RX_3– RX_5– RX_7– RX_9– RX_11– RX_13– RX_15–
7 TX_1– TX_3– TX_5– TX_7– TX_9– TX_11– TX_13– TX_15–
8 TX_0+ TX_2+ TX_4+ TX_6+ TX_8+ TX_10+ TX_12+ TX_14+
9 TX_0– TX_2– TX_4– TX_6– TX_8– TX_10– TX_12– TX_14–
GND = Ground
Table 2. Pin Assignments on Each Port (Half Duplex)
Connector Pin Port 1 Port 2 Port 3 Port 4 Port 5 Port 6 Port 7 Port 8
1 GND GND GND GND GND GND GND GND
2 NC NC NC NC NC NC NC NC
3 TX_1+/
RX_1+
TX_3+/
RX_3+
TX_5+/
RX_5+
TX_7+/
RX_7+
TX_9+/
RX_9+
TX_11+/
RX_11+
TX_13+/
RX_13+
TX_15+/
RX_15+
4 NC NC NC NC NC NC NC NC
5 NC NC NC NC NC NC NC NC
6 NC NC NC NC NC NC NC NC
7 TX_1–/
RX_1–
TX_3–/
RX_3–
TX_5–/
RX_5–
TX_7–/
RX_7–
TX_9–/
RX_9–
TX_11–/
RX_11–
TX_13–/
RX_13–
TX_15–/
RX_15–
8 TX_0+/
RX_0+
TX_2+/
RX_2+
TX_4+/
RX_4+
TX_6+/
RX_6+
TX_8+/
RX_8+
TX_10+/
RX_10+
TX_12+/
RX_12+
TX_14+/
RX_14+
9 TX_0–/
RX_0–
TX_2–/
RX_2–
TX_4–/
RX_4–
TX_6–/
RX_6–
TX_8–/
RX_8–
TX_10–/
RX_10–
TX_12–/
RX_12–
TX_14–/
RX_14–
GND = Ground
NC = No connect
6
7
8
9
1
2
3
4
5
6
7
8
9
1
2
3
4
5