The following figure shows the hardware diagram for the NI 2833A/B (NI 2833).
Note   Hardware relay names are for the topology of a single-card device.

The following table lists relay names for one NI 2833 card. Refer to the NI SwitchBlock Device Reference for channel and relay naming when multiple cards are combined.

Relays
kCARD1AB0...kCARD1AB3
kCARD1R0C0...kCARD1R0C70
kCARD1R1C0...kCARD1R1C70
kCARD1R2C0...kCARD1R2C70
kCARD1R3C0...kCARD1R3C70