The Digitizer Input Section

The HP E1429 2-channel digitizer has single-ended and differential input ports on each channel. Each input port has a BNC connector and is DC coupled. A detailed block diagram of the input section is shown in Figure 3-3. Only one channel is shown since both are identical.

Figure 3-3. HP E1429 Digitizer Input Section

SCPI Command Control

The digitizer’s input section including the input state, input impedance, and low-pass filtering is controlled by the SCPI INPut subsystem. The input port is selected by the SENSe[<chan >]:FUNCtion subsystem. The input signal range is controlled by the SENSe[<chan >]:VOLTage subsystem. The commands in these subsystems are listed below.

INPUT[<port >] :FILTer

[:LPASs]

[:STATE] <mode > :IMPedance <impedance > [:STATe] <mode >

106 Understanding the HP E1429 Digitizer

Chapter 3

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HP E1429A manual Digitizer Input Section, Scpi Command Control