Agilent 34970A Specifications Sheet

Measurements you can trust
We took the measurement engine from our best-selling benchtop DMM and embedded it inside a 3-slot cardcage. You get the benefit of proven HP measurement performance, universal inputs with built-in signal conditioning, and modular flexibility, all in a low-cost, compact data acquisition package. The HP 34970A features 61/2 digits (22 bits) of resolution, 0.004% basic dcV accuracy, and ultra-low reading noise. Combine that with scan rates of up to 250 channels/sec, and you’ve got the speed and accuracy you need to get the job done right the first time.
Powerful flexibility to get your job done
Whether you need to measure temperature, ac/dc volts, resistance, frequency or current -- the HP 34970A can handle it. The internal autoranging DMM directly measures 11 different functions, eliminating the need for expensive external signal conditioning. And our unique design allows complete per-channel configurability for maximum flexibility and quick, easy set up. It’s like having an independent, high-performance DMM behind each channel.
Custom configurations that grow with you
Three module slots and eight switch/control modules allow you to customize the HP 34970A to meet your unique requirements. Buy only what you need -- and add more modules later as your application grows.
Unequaled ease of use
From the simplified configuration procedures, to the self-guiding front panel interface, we put in extra time and energy to save yours. Simple things --like on-module screw­terminal connectors, built-in thermocouple reference junctions, well-organized user documentation full of examples and hints, and a standard “getting started” kit that will have you making measurements 15 minutes out of the box -- all add up to increased productivity, whether you use the instrument every day or only now and then.
Free software to save you time and money
Now you don’t have to spend your valuable time writing or configuring software. HP BenchLink Data Logger software gives you a familiar Microsoft Windows®interface for test configuration and real-time data display and analysis. Even better, this full-featured data logging application is included free with every standard HP 34970A.
What can you expect from a data acquisition system that’s this affordable?
Just about everything!
HP 34970A Data Acquisition/Switch Unit
More power and flexibility than you ever imagined you could afford
3-slot mainframe offers up to 96 matrix crosspoints or 120 single-ended channels
3-year warranty to protect your investment
HP BenchLink Data Logger
software included;
drivers available for HP VEE and
National Instruments LabVIEW
®
Intuitive front panel: task-oriented, self-guiding menus
50k readings of non-volatile
memory holds data when
power is removed
HI/LO alarm limits on each input channel, plus 4 TTL alarm outputs
Scaling function for converting raw inputs into user-defined units
6
1
/2-digit (22-bit) internal DMM measures 11 functions without external signal conditioning
8 switch and control plug-in modules to choose from
Battery-backed real-time clockfor pacing
scans and timestamping readings
Built-in HP-IB and RS-232 interfaces
Monitor display mode lets you keep an eye on tests in progress
Following are technical specifica­tions for the HP 34970A Data Acquisition/Switch Unit and its modules. The explanations and examples below are helpful in understanding how to interpret these specifications:
• Measurement accuracy is specified as percent of reading plus percent of range, where reading is the actual measured value and range is the name of the scale (1V, 10V, etc)—not the full scale value (1.2V, 12V,etc.).
• DMM measurement accuracies include all switching errors. Switching errors are also listed separately in the module specifications section. Temperature measurement accuracies include ITS-90 conversion errors. The thermocouple accuracies include the reference junction error as well.
• Accuracies are listed as either 24-hour, 90-day or 1-year specifications. This refers to the length of time since the instrument’s last calibration. Use the specification that matches your calibration cycle. The 24-hour specifications are useful for determining short-term relative performance.
EXAMPLE 1: Basic dcV accuracy
Calculate the accuracy of the following measurement:
9 V dc input 10 V dc range 1 year accuracy specifications Normal operating temperature
(18ºC - 28ºC)
From the following page, the 1-year accuracy is
0.0035% of reading + 0.0005% of range
Which translates into
(0.0035/100 x 9 V)+ (0.0005/100 x 10 V) = 365µV
For a total accuracy of
365 µV / 9 V = 0.0041%
EXAMPLE 2: Extreme operating temperature
When the HP 34970A is used outside of its 18ºC-28ºC temperature range, there are additional temperature drift errors to consider. Assume the same conditions in example 1, but at a 35ºC operating temperature:
The basic accuracy is again
0.0035% of reading + 0.0005% of range=365 µV.
Now, multiply the 10 V temperature coefficient from the following page by the number of degrees outside of operating range for additional error:
(0.0005% reading + 0.0001%
range)/ºC x (35ºC - 28ºC) =
(0.0005% reading + 0.0001%
range)/ºC x 7ºC =
0.0035% reading + 0.0007% range = 385 µV
Total error is then
365 µV + 385 µV = 750 µV or
0.008%
EXAMPLE 3: Thermocouple measurement accuracy
Calculating the total thermocouple reading error is easy with the HP 34970A—just add the listed measurement accuracy to the accuracy of your transducer. Switching, conversion, and reference junction errors are already included in the measurement specification.
For this example, assume a J-type thermocouple input reading 150ºC.
From the following page, total error is
Thermocouple probe accuracy +
1.0 ºC
The probe vendor specifies
accuracy of 1.1ºC or 0.4 %, whichever is greater
Total error is then
1.0ºC + 1.1 ºC = 2.1ºC total, or 1.4 %
EXAMPLE 4: acV Accuracy
The acV function measures the true RMS value of the input waveform, regardless of waveshape. Listed accuracies assume a sinewave input. To adjust accuracies for non­sinusoids, use the listed crest factor adder.
For this example, assume a ±1 V square wave input with 50% duty cycle and a 1 kHz frequency.
Accuracy for 1 V, 1 kHz sinusoid is
0.06% reading + 0.04% range
A 50% duty cycle squarewave has
a crest factor of
Peak Value / RMS value = 1 V / 1 V
= 1
From Crest Factor table, add
0.05% of reading
The total accuracy is
0.11% of reading + 0.04% of range = 1.5 mV or 0.15 %
HP 34970A Technical Specifications
Accuracy Specifications
±(% of reading + % of range)
[1]
Includes measurement error, switching error, and transducer conversion error
Temperature
Function Range
[3]
Frequency, 24 Hour
[2]
90 Day 1 Year Coefficient
etc. 23°C±1°C 23°C±5°C 23°C±5°C 0°C-18°C
28°C-55°C
DC Voltage 100.0000 mV 0.0030 + 0.0035 0.0040 + 0.0040 0.0050 + 0.0040 0.0005 + 0.0005
1.000000 V 0.0020 + 0.0006 0.0030 + 0.0007 0.0040 + 0.0007 0.0005+ 0.0001
10.00000 V 0.0015+ 0.0004 0.0020 + 0.0005 0.0035 + 0.0005 0.0005 + 0.0001
100.0000 V 0.0020 + 0.0006 0.0035+ 0.0006 0.0045 + 0.0006 0.0005 + 0.0001
300.000 V 0.0020 + 0.0020 0.0035 + 0.0030 0.0045 + 0.0030 0.0005 + 0.0003
True RMS 100.0000 mV 3 Hz - 5 Hz 1.00 + 0.03 1.00 + 0.04 1.00 + 0.04 0.100 + 0.004
AC Voltage
[4]
to 100V 5 Hz - 10 Hz 0.35 + 0.03 0.35 + 0.04 0.35 + 0.04 0.035 + 0.004
10 Hz - 20 kHz 0.04 + 0.03 0.05 + 0.04 0.06 + 0.04 0.005 + 0.004
20 kHz - 50 kHz 0.10 + 0.05 0.11 + 0.05 0.12 + 0.05 0.011 + 0.005 50 kHz - 100 kHz 0.55 + 0.08 0.60 + 0.08 0.60 + 0.08 0.060 + 0.008 100 kHz - 300 kHz
[5]
4.00 + 0.50 4.00 + 0.50 4.00 + 0.50 0.20 + 0.02
300.0000V 3 Hz - 5 Hz 1.00 + 0.05 1.00 + 0.08 1.00 + 0.08 0.100 + 0.008 5 Hz - 10 Hz 0.35 + 0.05 0.35 + 0.08 0.35 + 0.08 0.035 + 0.008
10 Hz - 20 kHz 0.04 + 0.05 0.05 + 0.08 0.06 + 0.08 0.005 + 0.008
20 kHz - 50 kHz 0.10 + 0.10 0.11 + 0.12 0.12 + 0.12 0.011 + 0.012 50 kHz - 100 kHz 0.55 + 0.20 0.60 + 0.20 0.60 + 0.20 0.060 + 0.020 100 kHz - 300 kHz
[5]
4.00 + 1.25 4.00 + 1.25 4.00 + 1.25 0.20 + 0.05
Resistance
[6]
100.0000 1 mA current source 0.0030 + 0.0035 0.008 + 0.004 0.010 + 0.004 0.0006 + 0.0005
1.000000 k 1 mA 0.0020 + 0.0006 0.008 + 0.001 0.010 + 0.001 0.0006 + 0.0001
10.00000 k 100 µA 0.0020 + 0.0005 0.008 + 0.001 0.010 + 0.001 0.0006 + 0.0001
100.0000 k 10 µA 0.0020 + 0.0005 0.008 + 0.001 0.010 + 0.001 0.0006 + 0.0001
1.000000 M 5.0 µA 0.002 + 0.001 0.008 + 0.001 0.010 + 0.001 0.0010 + 0.0002
10.00000 M 500 nA 0.015 + 0.001 0.020 + 0.001 0.040 + 0.001 0.0030 + 0.0004
100.0000 M 500 nA// 10 M 0.300 + 0.010 0.800 + 0.010 0.800 + 0.010 0.1500 + 0.0002
Frequency 100 mV 3 Hz - 5 Hz 0.10 0.10 0.10 0.005
and Period
[7]
to 5 Hz - 10 Hz 0.05 0.05 0.05 0.005
300 V 10 Hz - 40 Hz 0.03 0.03 0.03 0.001
40 Hz - 300 kHz 0.006 0.01 0.01 0.001
DC Current 10.00000 mA <0.1 V burden 0.005 + 0.010 0.030 + 0.020 0.050 + 0.020 0.002+ 0.0020
(HP 34901A only) 100.0000 mA <0.6V 0.010 + 0.004 0.030 + 0.005 0.050 + 0.005 0.002 + 0.0005
1.000000 A <2 V 0.050 + 0.006 0.080 + 0.010 0.100 + 0.010 0.005 + 0.0010
True RMS AC 10.00000 mA 3 Hz - 5 Hz 1.00 + 0.04 1.00 + 0.04 1.00 + 0.04 0.100 + 0.006
Current and
[4]
5 Hz - 10 Hz 0.30 + 0.04 0.30 + 0.04 0.30 + 0.04 0.035 + 0.006
(HP 34901A only) 1.000000 A 10 Hz - 5 kHz 0.10 + 0.04 0.10 + 0.04 0.10 + 0.04 0.015 + 0.006
100.0000 mA
[8]
3 Hz - 5 Hz 1.00 + 0.5 1.00 + 0.5 1.00 + 0.5 0.100 + 0.06 5 Hz - 10 Hz 0.30 + 0.5 0.30 + 0.5 0.30 + 0.5 0.035 + 0.06 10 Hz - 5 kHz 0.10 + 0.5 0.10 + 0.5 0.10 + 0.5 0.015 + 0.06
Temperature Type Best Range Accuracy
[9]
Extended Range Accuracy
[9]
Thermocouple B 1100°C to 1820°C 1.2°C 400°C to 1100°C 1.8°C
E -150°C to 1000°C 1.0°C -260°C to -150°C 1.5°C
J -150°C to 1200°C 1.0°C -210°C to -150°C 1.2°C
K -100°C to 600°C 1.0°C -230°C to -100°C 1.5°C
0.03 °C
N -100°C to 1300°C 1.0°C -220°C to -100°C 1.5°C R 300°C to 1760°C 1.2°C -50°C to 300°C 1.8°C S 400°C to 1760°C 1.2°C -50°C to 400°C 1.8°C
T -100°C to 400°C 1.0°C -240°C to -100°C 1.5°C
RTD R0from 49 -200°C to 600°C 0.06°C 0.003 °C
to 2.1 k
Thermistor 2.2 k, 5k, 10k -80°C to 150°C 0.08°C 0.002 °C
[1] Specifications are for 1 hr warm-up and 61/2digits, Slow ac filter [2] Relative to calibration standards [3] 20% over range on all ranges except 300 Vdc and ac ranges and 1 Adc and ac current ranges [4] For sinewave input > 5% of range. For inputs from 1% to 5% of range and < 50 kHz, add 0.1%
of range additional error
[5] Typically 30% of reading error at 1 MHz, limited to 1 x 10
8
V Hz
[6] Specifications are for 4- wire ohms function or 2-wire ohms using Scaling to remove
the offset. Without scaling, add 1 additional error in 2-wire Ohms function [7] Input > 100 mV. For 10 mV inputs multipy % of reading error x 10 [8] Specified only for inputs >10 mA [9] 1 year accuracy. For total measurement accuracy, add temperature probe error
Measurement Characteristics
DC Voltage
Measurement Method: Continuously Integrating Multi-slope III
A-D Converter A-D Linearity: 0.0002% of reading + 0.0001 % of range Input Resistance:
100 mV, 1 V, 10 V ranges Selectable 10 Mor > 10,000 M
100V, 300V ranges 10 M± 1% Input Bias Current: < 30 pA at 25°C Input Protection: 300 V all ranges
True RMS AC Voltage
Measurement Method: AC coupled True RMS — measures the
AC component of the input with up to
300 Vdc of bias on any range Crest Factor: Maximum of 5:1 at Full Scale Additional Crest Factor Errors (non-sinewave): Crest Factor 1-2 0.05 % of reading
Crest Factor 2-3 0.15 % of reading
Crest Factor 3-4 0.30 % of reading
Crest Factor 4-5 0.40 % of reading Input Impedance: 1 M± 2% in parallel with 400 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, 1k, 10kranges Maximum Lead Resistance: 10% of range per lead for 100 and
1 kranges. 1 kon all other ranges Input Protection: 300 V on all ranges
Frequency and Period
Measurement Method: Reciprocal counting technique Voltage Ranges: Same as AC Voltage function Gate Time: 1s, 100 ms, or 10 ms Measurement Timeout: Selectable 3Hz, 20Hz, 200Hz LF limit
DC Current
Shunt Resistance: 5 for 10 mA, 100 mA; 0.1 for 1 A Input Protection: 1A 250V fuse on HP 34901A module
True RMS AC Current
Measurement Method: Direct coupled to the fuse and shunt.
AC coupled True RMS measurement
(measures the ac component only) Shunt Resistance: 5 for 10 mA; 0.1 for 100 mA, 1 A Input Protection: 1A 250V fuse on HP 34901A module
Thermocouple
Conversion: ITS-90 software compensation Reference Junction Type: Internal, Fixed, or External Open thermocouple Check: Selectable per channel. Open >5k
Thermistor 44004, 44007, 44006 series RTD α = 0.00385 (DIN) and α = 0.00392
Measurement Noise Rejection 60 (50) Hz
[1]
dc CMRR: 140 dB ac CMRR: 70 dB
Integration Time Normal Mode Rejection
[2]
200 plc / 3.33s (4s) 110 dB
[3]
100 plc / 1.67s (2s) 105 dB
[3]
20 plc / 333 ms (400 ms) 100 dB
[3]
10 plc / 16.7 ms (20 ms) 95 dB
[3]
2 plc / 33.3 ms (40 ms) 90 dB 1 plc / 16.7 ms (20 ms) 60 dB < 1 plc 0 dB
Operating Characteristics
[4]
Single Channel Measurement Rates
[5]
Function Resolution reading/s
dcV, 2-wire Resistance 6
1
/2digits (10 plc) 6 (5)
5
1
/2digits (1 plc) 57 (47)
4
1
/2digits (0.02 plc) 600
Thermocouple 0.1°C (1 plc) 57 (47)
(0.02 plc) 220
RTD, Thermistor 0.01°C (10 plc) 6 (5)
0.1°C (1 plc) 57 (47) 1°C (0.02 plc) 220
acV 6
1
/2Slow (3 Hz) 0.14
6
1
/2Med (20 Hz) 1
6
1
/2Fast (200 Hz) 8
6
1
/
2
[6]
100
Frequency, Period 6
1
/2digits (1s gate) 1
5
1
/2digits (100 ms) 9
4
1
/2digits (10 ms) 70
System Speeds
[7]
INTO Memory ch/s
single channel dcV 600 34902A scanning dcV 250 34907A scanning digital in 250 34902A scanning dcV with scaling & 1 alarm fail 220 34907A scanning totalize 170 34902A scanning temperature 160 34902A scanning acV
[6]
100 34902A scanning dcV/Ohms on alternate channels 90 34901A/34908A scanning dcV 60
INTO and OUT of memory to HP-IB or RS-232 (init, fetch)
34902A scanning dcV 180 34902A scanning dcV with timestamp 150
OUT of memory to HP-IB
Readings 800 Readings with timestamp 450 Readings with all format options ON 310
OUT of memory to RS-232
Readings 600 Readings with timestamp 320 Readings with all format options ON 230
DIRECT to HP-IB or RS-232
single channel dcV 440 34902A scanning dcV 200 single channel MEAS DCV 10 / MEAS DCV 1 25 single channel MEAS DCV/ MEAS OHMS 12
[1] For 1 Kunbalance in LO lead [2] For power line frequency ±0.1% [3] For power line frequency ±1% use 80 dB or ±3% use 60 dB [4] Reading speeds for 60 Hz and (50 Hz) operation [5] For fixed function and range, readings to memory, scaling and alarms off [6] Maximum limit with default settling delays defeated [7] Speeds are for 4
1
/2digits, delay Ø, display off, autozero off. Using 115 kbaud RS-232 setting
System Characteristics
Scanning Inputs
Analog HP 34901A, HP 34902A, and HP 34908A
multiplexer channels Digital HP 34907A digital in and totalize Scan list Scans channels in ascending order
Scan Triggering
Source Interval, external, button press, software,
or on monitor channel alarm Scan count 1 to 50,000 or continuous Scan interval 0 to 99 hours; 1ms step size Channel delay 0 to 60 seconds per channel; 1 ms step size External trig delay <2 ms. With monitor on <200 ms External trig jitter <2 ms
Alarms
Analog inputs Hi, Lo, or Hi + Lo evaluated each scan Digital inputs HP 34907A digital in: maskable pattern match
or state change
HP 34907A totalize: Hi limit only Monitor channel Alarm evaluated each reading Alarm Outputs 4 TTL compatible
Selectable TTL logic Hi or Lo on fail Latency 5 ms (typical)
Memory Battery backed, 4 year typical life
[1]
Readings 50,000 with timestamp
Readable during scan States 5 instrument states with user label Alarm Queue Up to 20 events with channel number, reading,
and timestamp
System Features
Per-channel Math Individual Mx + B scaling and
Min/Max/Average calculated real time Power Fail Recovery Resumes scanning automatically Relay maintenance Counts each relay closure and stores on module
User resettable. Real time clock Battery-backed, 4 year typical life
[1]
General Specifications
Power Supply 100V / 120V / 220V / 240V ±10% Power Line Frequency 45 Hz to 66 Hz automatically sensed Power Consumption 12 W (25 VA peak) Operating Environment Full accuracy for 0°C to 55°C
Full accuracy to 80% R.H. at 40°C Storage Environment -40°C to 70°C
[1]
Weight Net: 3.6 kg (8.0 lbs) Safety Conforms to CSA, UL-1244, IEC 1010 Cat I RFI and ESD CISPR 11, IEC 801/2/3/4 Warranty 3 years
Software
HP BenchLink Data Logger (not included with Option 001) System Requirements
[2]
PC Hardware 486, 66 MHz, 16 MB RAM, 12 MB disk space Operating System
Windows®3.1,Windows 95®, Windows NT 4.0
®
Computer Interfaces
[3]
HP-IB HP 82335B, 82340A/B/C, 82341A/B/C/D
National Instruments AT-GPIB/TNT, PCI-GPIB LAN -to- HP-IB HP 2050A (Windows 95 and NT only) RS-232 (Serial Port) PC COM 1-4
HP BenchLink Features
Configuration Spreadsheet-like setup page
Upload and Download intrument setups
Computed channels using
+ - * / , dB, dBm, dBV, x
2
, x
and full, 1/2, or 1/4 bridge strain Graphical Displays
Real-time and historical data displays
Add, delete, size, and configure real time
Strip chart with markers and alarm indication,
X-Y chart with curve fit, Histogram,
Bar meter, Digital meter, and Data table Graphical Controls
Sliders, switches, buttons, and LED lights Alarm / Limit testing
Start / Stop scanning on alarm condition
Control HP 34903A relay state or HP 34907A
digital output on alarm Data
Real time streamed (saved) to disk
Copy data or graphics to windows clipboard
Export user-selected data to ASCII file, CSV, TSV Event logging
Automatic entry of alarms and errors
Enter user notes real time Printing
Setup spreadsheet, all graphics, and
event log entries
HP BenchLink Performance
[4]
Scan and save to disk 100 ch/s 2 strip charts displayed
Instrument Driver Support for Programming Languages
Universal Compatible with Windows 95 and NT Instrument Driver HP VEE 3.2,
Visual Basic 4.0,
LabWindows CVI 4.0,
LabVIEW 4.0 LabVIEW Driver (VI) LabVIEW 4.0
[1] Storage at temperatures above 40°C will decrease battery life [2] Software provided on CD-ROM and includes utility to create floppy disks for installation [3] Interface and driver must be purchased and installed separately [4] 90 MHz Pentium, 20 MB RAM
Windows, Windows 95, and Windows NT are registered trademarks of Microsoft Corp. LabVIEW is a registered trademark of National Instruments Corporation.
_
Module Specifications
The HP 34970A accuracy specifications already include the switching offset and reference junction errors shown below. These errors are listed separately for determining system error with external measurement devices.
Up to three modules, in any combination, can be inserted into a single mainframe. The HP 34970A's internal DMM connections are accessible only through the HP 34901A, HP 34902A, and HP 34908A low-frequency multiplexers.
On-module screw terminals accept wire sizes from 16 gage to 22 gage. 20 gage wire is recommended for high channel count applications. The HP 34905A and HP 34906A RF Multiplexers use SMB connectors. A standard set of (10) BNC-to-SMB adapter cables is provided with each RF module for convenient BNC connections.
Multiplexer Actuator Matrix RF Multiplexer Multifunction
GENERAL 34901A 34902A 34908A 34903A 34904A 34905A 34906A 34907A
Number of Channels 20 + 2 16 40 20 4 x 8 Dual 1 x 4 See
2/4 wire 2/4 wire 1 wire SPDT 2 wire 50 75 Document #4906 Connects to Internal DMM for module Scanning Speed 60 ch/s 250 ch/s 60 ch/s specifications Open/Close Speed 120/s 120/s 70/s 120/s 120/s 60/s
INPUT
Voltage (dc , ac rms) 300V 300V 300V 300V 300V 42V Current (dc , ac rms) 1A 50mA 1A 1A 1A 0.7A Power (W , VA) 50W 2W 50W 50W 50W 20W
DC CHARACTERISTICS
Offset Voltage
[1]
< 3uV < 6uV < 3uV < 3uV < 3uV < 6uV
Initial Closed Channel R
[1]
< 1 < 1 < 1 < 0.2 < 1 < 0.5
Isolation ch-ch, ch-earth > 10 G > 10 G > 10 G > 10 G > 10 G > 1 G
AC CHARACTERISTICS
Bandwidth 10 MHz 10 MHz 10 MHz 10 MHz 10 MHz 2 GHz
[2]
2 GHz
[2]
Insertion Loss (dB) 10 MHz -0.1 -0.1
100 MHz -0.4 -0.4 500 MHz -0.6 -0.5
1 GHz -1 -1
1.5 GHz -1.2 -1.5 2 GHz -3 -2
SWR 10 MHz 1.02 1.02
100 MHz 1.05 1.05 500 MHz 1.20 1.25
1 GHz 1.20 1.40
1.5 GHz 1.30 1.40 2 GHz 1.40 2.00
ch-ch Cross Talk (dB)
[3]
10 MHz -45 -45 -18
[4]
-45 -33 -100 -85 100 MHz -85 -75 500 MHz -65 -65
1 GHz -55 -50
1.5 GHz -45 -40 2 GHz -35 -35
Risetime < 300 ps Signal Delay < 3 ns Capacitance HI - LO < 50 pF < 50 pF < 50 pF < 10 pF < 50 pF < 20 pF
LO - Earth < 80 pF < 80 pF < 80 pF < 80 pF < 80 pF
Volt-Hertz limit 10
8
10
8
10
8
10
8
10
8
10
10
OTHER
T/C Cold Junction Accuracy
[1]
(typical)
0.8°C 0.8°C 0.8°C
Switch Life No Load (typical) 100M 100M 100M 100M 100M 5M 5M
Rated Load (typical)
[5]
100k 100k 100k 100k 100k 100k 100k
Temperature Operating all cards — 0°C to 55°C
Storage all cards — -20°C to 70°C
Humidity (non-condensing) all cards — 40°C / 80% RH
[1] Errors included in DMM measurement accuracy specifications [2] Bandwidth direct to card SMB connectors [3] 50source, 50load [4] Isolation within channel 1 to 20 or 21 to 40 banks is -40 dB [5] Applies to resistive loads only
HP 34970A Data Acquisition/Switch Unit
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