Terminal Block The HP E1459A includes both the input / interrupt module and a screw-type standard terminal block. User inputs to the terminal block are to the High and Low for each channel, +5Volt, Ground, Data Valid (DAV0 - DAV3), External Trigger (XTRIG0 - XTRIG3), and Interrupt (INTR0 - INTR3) .

Figure 1-9shows the HP E1459A’s standard screw-type terminal block connectors and associated channel numbers. Use the guidelines below to wire connections.

CH0

CH5

CH10

CH15

CH20 CH25 CH29 CH32 +5 GND

CH1

CH6

CH11

CH16

CH21 CH26 CH30 CH33 +5 GND

CH2

CH7

CH12

CH17

CH22 CH27 CH31 CH34 +5 GND

CH3

CH8

CH13

CH18

CH23 CH28

CH4

CH9

CH14

CH19

CH24 +5 GND

CH35 CH38 CH41 CH44 CH48 CH52 CH56 CH60 CH63

CH36 CH39 CH42 CH45 CH49 CH53 CH57 CH61+5 GND

CH37 CH40 CH43 CH46 CH50 CH54 CH58 CH62 +5 GND

CH47 CH51 CH55 CH59 DAVINTREXTGND

DAVINTREXTGND DAVINTREXTGND

NotUsed

Figure 1-9. HP E1459A Standard Screw-type Terminal Block

Wiring Guidelines • Be sure the wires make solid connections in the screw terminals.

•Maximum terminal wire size is No. 16 AWG. When wiring all channels, a smaller gauge wire (No. 20 or 22 AWG) is recommended. Wire ends should be stripped 5 to 6 mm (0.2 to 0.25 in.) and tinned to prevent single strands from shorting to adjacent terminals.

WARNING To prevent the spread of fire in the case of a fault, use flame-rated field wiring whenever the input voltage will exceed 30Vrms, 42Vpeak, or 60Vdc.

Installing and Configuring the HP E1459A 25