34980A Data Acquisition System Find us at www.keysight.
High-performance data acquisition system provides a low-cost, highly flexible measurement platform If you use automated test equipment for design validation or manufacturing, you now have a costeffective solution for many test system applications. The 34980A multifunction switch/measure unit provides functionality that is easy to set up and use, with a fast startup time. The 34980A helps you lower your cost of test and accelerate your test-system integration and development.
• • • • • Heavy-duty cabling and connection options Flexible rack mounting options Relay counters help predict end-of-life In-rack calibration for reduced maintenance time DMM measurement accuracies include the switch for simple calculations Make system connections easily and quickly with simple, reliable connection options: • • • • Built-in Ethernet, USB 2.
• • • • • Temperature with thermocouples, RTDs, or thermistors (with 34921A) DC and AC voltage 2- and 4-wire resistance Frequency and period DC and AC current You can control the DMM directly or configure it to work in conjunction with the switches. Each switch channel can be configured independently for measurement functions, scale factors and alarm limits. Advanced measurement features such as offset compensation, variable integration time, and delay are also selectable on a per-channel basis.
• • • • • • View and modify instrument setup Open, close, or monitor switches Send SCPI commands Define and execute switch scans and switch sequences View error queue Get status reports on relay counts, firmware revisions, and more Additionally, since the Web interface is built into the instrument, you can access it on any operating system that supports the Web browser without having to install any special software. Password protection and LAN lock out are also provided to limit access.
Power and flexibility to get your job done Find us at www.keysight.
Mix and match 34980A modules to create your own custom configuration The 34980A mainframe holds up to eight plug-in modules. Mix and match them to create a custom system to meet your switching and system control needs. You can easily add or replace modules as your needs change.
34980A multiplexer switch modules The 34980A multiplexer modules can be used to connect one of many different points to a single point. You can connect to an external instrument or scan multiple analog signals to the internal DMM.
your own switch configuration. All the multiplexer switches have a relay counter to help predict when relays need to be replaced. NOTE: The 34923A and 34924A have 100 ohm input protection resistors that limit current and protect the reed relays. Figure 3: 34925A 40/80-channel optically isolated FET mux (shown in 1-wire mode Multiplexer switch modules Channels/configurations Switch type 34921A 40 2-wire 20 4-wire 4-current 1.
AC characteristics Bandwidth at terminal block 4 45 MHz 25 MHz Crosstalk at terminal block (ch-ch) - 75 dB - 75 dB 4 300 kHz 1 MHz 20 MHz 45 MHz Capacitance at terminal block HI-LO LO – earth 45 MHz 5/4 MHz 25 MHz 5/4 MHz 1 MHz 11 10 MHz 1-wire - 75 dB - 75 dB Not recommended for RF signal switching - 75 dB - 70 dB - 50 dB - 45 dB - 40 dB - 75 dB - 50 dB - 40 dB - 75 dB - 50 dB 150 pF 150 pF 250 pF 200 pF 130 pF 120 pF 200 pF 170 pF General Characteristics Relay life, typical No load 10 V, 100
Each cross-point in the matrix switch has two wires—a high and a low for the measurement. Or, if you prefer, the 34933A and 34934A can be configured as a single-wire matrix, increasing the number of channels. Figure 5. 34932A dual 4x16 armature matrix The 34933A also has in-rush resistors on each column for added protection. The 34934A also has in-rush protection resistors, but also has an automatic bypass switch for flexibility in making low-level measurements.
Matrix switch modules Channels/configurations 34931A dual 4x8 8x8 4x16 34932A dual 4x16 8x16 4x32 Switch type Input characteristics (per channel) Max volts Max current (DC, AC RMS) Switch current Carry current Power (W, VA) 2, 6 Volt-Hertz limit Initial closed channel res 3, 9 Armature latching General Specifications Offset voltage 3 DC Isolation (ch-ch, ch-earth) AC characteristics Bandwidth at terminal block 4 Crosstalk at terminal block (ch-ch) 4 300 kHz 1 MHz 20 MHz Capacitance at terminal block HI
34980A general-purpose switch modules The 34980A general-purpose switches can be used to route signals or to control other system devices. These switches are ideal for device actuation and switching loads or power supplies.
AC characteristics Bandwidth at terminal block3 Channel isolation at terminal block3 100 kHz 1 MHz 10 MHz Capacitance at terminal block CH - CH CH - earth General characteristics Relay life no-load/rated Open/close time Initial/reset relay state Analog bus backplane connection 10 MHz 1 MHz 10 MHz 55 dB 35 dB 15 dB 60 dB 40 dB 45 dB 25 dB 5 dB Form C 12pF, Form A 10pF Form C 21pF, Form A 18pF 65 pF 105 pF 20 pF 70 pF Form C – 100 M/100 k Form A – 50 M/30 k Form C – 4 ms/4 ms Form A – 10 ms/10ms Fo
Figure 8: 34941A Quad 1x4 50 ohm 3 GHz multiplexer Figure 9: 34941A typical initial crosstalk Figure 10: 34941A typical initial insertion loss Figure 11: 34941A typical initial VSWR Figure 12: 34942A typical initial crosstalk Find us at www.keysight.
34946A/47A—from DC to 26.5 GHz For applications where you need only a few high-frequency switches, the 34946A and 34947A offer inglepole, double-throw switches in either 4GHz, 20GHz or 26.5GHz options. These modules internally mount two or three independent Keysight N1810 series coaxial switches. These switches are well known for their excellent insertion loss, isolation and VSWR specifications. Switch read back capabilities allow you to query the position of the switch.
DC to 3 GHz 34941A quad 1x4 50 Ω unterminated, latching relays 34942A quad 1x4 75 Ω unterminated, latching relays DC to 3 GHz DC to 1.5 GHz 100 MHz 1 GHz 3 GHz VSWR 0.15 dB 0.60 dB 1.40 dB 0.15 dB 0.60 dB N/A 100 MHz 1 GHz 3 GHz Isolation (dB)2 1.03 1.25 1.55 Contact factory 1.15 1.35 N/A Contact factory Channels Switch Type RF characteristics Frequency range2 DC to 4 GHz, 20 GHz or 26.5 GHz DC to 4 GHz < 0.42 dB, @ 20GHz < 0.69 dB, @ 26.5GHz < 0.8 dB DC to 4 GHz, 20 GHz or 26.
34945A/34945EXT microwave switch/attenuator driver This module allows you to control switches attenuators, and other devices external to the 34980A. The 34945A / 34945EXT provides the power and control signals for many of the most popular microwave switches and attenuators. One 34945A /34945EXT combination can drive up to 64 switch coils—that’s 32 standard SPDT switches. The 34945A /EXT can be extended by adding additional 34945EXT boards. The first 34945EXT is powered by the mainframe.
34945EXT switch drive (64 channels, low side drive mode) General specifications Driver off voltage (max) 30 V Driver off leakage current 500 μA Driver on current (max) 600 mA Driver on voltage (max) 0.5 V @ 600 mA 34945EXT switch drive (64 channels, TTL drive mode) Hi output voltage 3 V @ Iout = 2 mA Lo output voltage 0.4 V @ Iin = 20 mA Lo input Current 20 mA 34945EXT position indicator sense inputs Channels 64 Lo input voltage (max) 0.8 V Hi input voltage (min) 2.
34980A system control modules 34950A 64-bit digital I/O with memory and counter This module can be used to simulate or detect digital patterns. It has eight 8-bit digital I/O channels with handshaking, pattern memory, two 10 MHz counters with gate functions, and a programmable clock output. Digital input/output The digital I/O bits are organized into two banks of 32-bits. The I/O bits can be configured and programmed as inputs or outputs in 8-bit channels.
Counter function characteristics Max frequency Vin Min rise/fall time Totalizer function characteristics Maximum count Maximum input frequency Vin Gate input Maximum input frequency System clock generator characteristics Frequency Vout Iout (max) Accuracy 1. 2. 3. 4. 5.
34951A 4-channel isolated D/A converter with waveform memory This module has four independent, isolated channels that output DC voltage up to ± 16 V or DC current up to ± 20 mA. The gain and offset can be adjusted on-the-fly. Each channel can be controlled manually, or use the onboard memory to download a waveform. The 500k of memory is global and can store up to 32 waveforms.
34952A multifunction module with 32-bit DIO, 2-channel D/A and totalizer The multifunction module offers the flexibility you need for system control. The 34952A has four 8-bit digital I/O channels, a 100- kHz gated totalizer, and two ± 12 V analog outputs—all on a single earthreferenced module. The digital inputs and totalizer input may be included in a scan list. Alarm limits for the digital and totalizer inputs are evaluated continuously, capturing and logging alarm conditions even between scans.
34959A breadboard module Use this module to create your own custom designs inside the 34980A mainframe. You can control your custom circuits with access to both the +12 V and +5 V supplies, 28 relay drive lines and two 8-bit GPIO ports. Your design can be isolated from the analog buses or connected by loading the backplane switches. Simply mount your custom PC board or other components into the space provided and connect via the two ribbon connectors provided.
34980A system specifications and characteristics DMM accuracy ± (% of reading + % of range) Includes measurement error, switching error, and transducer conversion error1. Range 4, Frequency, etc. 24 hour 2,3 Tcal ± 1oC DC voltage (with 34921A / 22A / 31A / 32A)10,11 Input impedance = Hi-Z 10 V range and below 100.0000 mV 0.0030 + 0.0035 1.000000 V 0.0020 + 0.0006 10.00000 V 0.0015 + 0.0004 100.0000 V 0.003 + 0.0006 300.0000 V 0.003 + 0.0020 True RMS AC voltage 5 All ranges from 100.0000 mV to 100.
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. One hour warm-up and a fixed configuration with slow AC filter, sine wave input, and 6½ digits. Temperature within ± 5°C of temperature at calibration (Tcal between 18-28°C) 90 minute warm-up and a fixed configuration and 6½ digits.
Typical system speeds (measurements made on a 3.2GHz PC running VB6 in Windows XP Pro) Single channel reading times in msec Single channel 1,2 Single channel, DCV Single channel, ACV Single channel, ohms Single channel while changing scale (eg MEAS DCV 10 / MEAS DCV 1) Single channel while changing function (eg.
Frequency, period 1. 2. 6½ med (20Hz) 6½ slow (3Hz) 4½ digits (10 ms) 5½ digits (100 ms) 6½ digits (1 s gate) 350 350 70 9 1 Readings speeds for 60Hz; autozero off For fixed function and range, readings to memory, scaling and alarms off, autozero off. Scanning measurement rates to bus or memory Scanning channels 1 Scanning DCV or 2-wire ohms 34925A 34923A/24A 34921A/22A Scanning ACV 2 34925A 34923A/24A 34921A/22A Scanning temperature 34921A Scanning digital in 34950A 1. 2.
Medium 20 Hz - 300 kHz Fast 200 Hz - 300 kHz Input impedance 1 M Ω ± 2% in parallel with 150 pF Input protection 300 Vrms all ranges Resistance Measurement method Selectable 4-wire or 2-wire ohms Current source Referenced to LO input Offset compensation Selectable on 100 Ω, 1k Ω, 10 kΩ ranges Maximum lead resistance 10% of range per lead for 100 Ω and 1k Ω ranges.
DC operating characteristics 4 Digits 5 Function DCV 7, DCI, and Resistance (≤10 kΩ) 6½ 6½ 5½ 5½ 4½ 4½ Readings / s 0.6 (0.5) 6 (5) 60 (50) 300 600 3000 Additional RMS noise error 0% of range 0% of range 0.001% of range 0.001% of range 6 0.01% of range 6 0.1% of range 6 Autozero OFF operation Following instrument warm-up at calibration temperature ±1°C and <10 minutes, add 0.0002% range additional error +5 μV. (For 300 VDC, instead of .0002% of range, need .
General Specifications System specifications Scanning inputs Analog: Digital Scan triggering Source Scan count Scan Interval Channel delay External trig delay External trig jitter Alarms Analog inputs Digital inputs Monitor channel Alarm outputs Latency Memory Type Readings States Alarm queue System features Per-channel Power fail recovery Relay maintenance Real-time clock Line power Power supply Power line frequency Power consumption Environment Operating environment Storage environment Mechanical Mainfram
Recommended software Keysight IO Libraries Suite 2019 or greater: www.keysight.com/find/IOLibraries BenchVue: www.keysight.com/find/benchvue BenchVue DAQ: www.keysight.com/find/benchvuedaq The BenchVue platform is a prerequisite for the BenchVue DAQ application. Software driver support for programming languages Software drivers IVI-C and IVI COM for Windows 7/8.
Ordering Instructions Instructions Mainframe – holds up to 8 plug-in modules 34980A Multifunction data acquisition mainframe BV0006B BenchVue Data Acquisition Control and Analysis (DAQ) Module Description Multiplexer modules 34921A 40-channel armature multiplexer w/low thermal offset (order 34921T for temp reference) 34923A 40/80-channel reed multiplexer 34925A 40/80-channel optically isolated FET multiplexer 34922A 70-channel armature multiplexer 34924A 70-channel reed multiplexer Matrix modules 34931A D
947A 9 SMA System measurement and control modules 34950A 64-bit digital I/O with memory and counter 34951A 34952A 34959A 4-channel isolated D/A converter with waveform memory (DMM option required for calibration) Multifunction module with 32-bit DIO, 2-ch D/A and totalizer Breadboard module 2 – 78-pin Dsub, Female 1 – 50-pin Dsub, Female 26- & 40-pin internal ribbon cable connectors N1812UL unterminated 5 port transfer Requires standard 50 ohm SMA cables and adapters 8710-2576 SMA Extender for connec
34945A accessory distribution boards required for control of external switches. One 34945EXT is required for each 64 coils (included, add more 34945EXTs for additional coils). 34945EXT External driver for 34945A, one required for each 64 coils –holds 4 distribution boards.
