The Keysight (formerly Agilent) 34907A is a multifunction module designed for the 34970A and 34972A Data Acquisition/Switch Units. It provides high flexibility for sensing and control applications by integrating 16 bits of digital input/output, a 100 kHz gated totalizer, and two ±12 V analog outputs (DACs) on a single earth-referenced plug-in module.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | Mainframe-dependent (GPIB, RS-232, USB, LAN via host mainframe) |
Physical
| Parameter | Value |
|---|---|
| Power Supply | Powered via mainframe backplane |
| Operating Temperature | 0°C to 55°C |
| Number of Slots Occupied | 1 |
Module Overview
| Parameter | Value |
|---|---|
| Module Type | Multifunction Module |
| Module Composition | 16 digital I/O bits, 2 analog outputs, 1 totalizer channel |
| Supported Mainframe Models | 34970A, 34972A |
| Maximum Common Mode Voltage | 42 V peak (with respect to earth) |
Digital Input / Output
| Parameter | Value |
|---|---|
| Number of Digital I/O Ports | 2 |
| Bits per Port | 8 |
| Total Digital I/O Bits | 16 |
| Input High Voltage (VIH) | >= 2.0 V |
| Input Low Voltage (VIL) | <= 0.8 V |
| Maximum Input Voltage | 42 V peak |
| Digital Output Type | Open-drain (sink) |
| Maximum Sink Current per Bit | 400 mA |
| Maximum External Voltage for Output | 42 VDC |
Analog Output (DAC)
| Parameter | Value |
|---|---|
| Number of DAC Channels | 2 |
| Output Voltage Range | ±12 V |
| Maximum Output Current | ±10 mA |
| DC Voltage Accuracy | ±(0.25% of output + 20 mV) (1 Year, 23°C ± 5°C) |
| Temperature Coefficient | ±(0.015% of output + 1 mV)/°C |
Totalizer / Counter
| Parameter | Value |
|---|---|
| Number of Totalizer Channels | 1 |
| Counter Resolution | 26-bit (up to 67,108,863 counts) |
| Maximum Count Rate | 100 kHz |
| Minimum Pulse Width | 5 µs |
| Totalizer Input High Voltage (VIH) | >= 2.0 V |
| Totalizer Input Low Voltage (VIL) | <= 0.8 V |
| Totalizer Maximum Input Voltage | 42 V peak |
| Trigger Edge Sensitivity | Selectable rising or falling edge |
| Totalizer Maximum Count | 67,108,863 (26-bit) |
Digital Input/Output
| Parameter | Value |
|---|---|
| Digital Output Low Voltage (VOL) | ≤ 0.4 V @ 40 mA sink |
Technology
Data Acquisition / DAQ Module
Applications
Test and measurement, sensing, control applications