是德科技 | KEYSIGHT
DAQM908A 模块 详细指标
Modular Module BERTs, Digitizers, and DAQs
条件：Measurement method Keysight patented continuous integration of multi-slope IV A/D converter.
A/D Linearity 0.0001% of reading +
0.0001% of range
Input resistance 0.1 V, 1V, 10V range Selectable 10 MΩ or >10 GΩ 100 V, 300 V range 10 MΩ
± 1%
Input bias current <
30 pA at 25 ºC
Input protection
300 V on all ranges
测量 method 数字 sampling（含） anti-alias 滤波器
Maximum input 250 DCV
300 Vrms
Input impedance 1 MΩ ± 1%, in parallel with <
100 pF
Input protection 1.6A
250V fuse on DAQM901A
AC measurement method Digital sampling with anti-alias filter
Input protection 1.6A
250V fuse on DAQM901A
条件：Overload ranging If peak input overload is detected during auto range, it will select a higher range.
Crest factor 10:1 maximum crest factor, (3:1 at full-scale). Measurement bandwidth is limited
to 300 kHz for signal plus harmonics.
Peak input
300% of range or maximum input
条件：Measurement method Will select 4-wire or 2-wire ohms. Current source referenced to LO input.
Maximum lead resistance (4-
wire ohms) 10% of range per lead for 100 Ω and 1 kΩ ranges.
1 kΩ on all other ranges
Conversion ITS-90 software compensation
Reference junction 类型内部, Fixed, 和外部
Open thermocouple check Selectable per channel. Open >
5 kΩ.
RTD PT100 and PT1000 Transducer Type
Thermistor 44004, 44006
44007 Series
Measurement noise rejection 60 Hz (50 Hz) for 1 kΩ LO lead unbalance (
± 500 V peak maximum)
Integration time Normal mode rejection1
External trigger latency < 1.4 ms (with display ON and monitor ON <
100 ms)
External trigger jitter < 16 us (with display ON and monitor ON <
18 ms)
Measurement method Reciprocal-counting technique. Measurement is AC-coupled using AC
条件：Voltage ranges 100 mVrms full scale to 300 Vrms. Auto or manual ranging.
minimizing measurement errors. 1. For power -line frequency ± 0.1%. 2. For power -line frequency ± 1%, the NMR is 40 dB. For ± 3%, use 30 dB.
Gate time 1 ms, 10 ms
100 ms, or 1 s
Measurement considerations All frequency counters are susceptible to error when measuring low-voltage, low-
frequency signals. Shielding inputs from external noise pickup is critical for
Power supply (Mains supply voltage fluctuation is not allowed to exceed ± 10%)
100 – 240 Vac
Power line frequency
50/60/400 Hz
Power consumption
75 VA Max
Operating temperature Full accuracy at 0 to 55 ºC
Storage temperature
-40 to +70 ºC
Operating humidity Full accuracy to 80% RH, at 40 ºC non-condensing
(Humidity degrades linearly to 50% RH at 55 ºC non-condensing)
Operating altitude Up to 3,000 m
Rack dimensions (W x H x D): 212.6 mm x 88.5 mm x
348.3 mm
Bench dimensions (W x H x D): 261.0 mm x 103.7 mm x
378.0 mm
Weight DAQ970A/DAQ973A
4.2 kg
条件：Acoustic noise - Nominal 35 dBA
Safety and EMC Refer to Declaration of Conformity for the latest revisions of
Voltmeter complete Polarity, Pulse Width
Computer interfaces LXI (rev
1.4) USB, LAN, GPIB (DAQ973A only)
Language SCPI-1999, IEEE-488
34970A/34972A compatible
Front panel USB host port USB
2.0 – high-speed mass storage (MSC) class device
Capability: Import/export instrument configuration files, save volatile
The Keysight DAQ970A/DAQ973A accuracy specifications already include the switching offset and
reference junction errors shown below. These errors are listed separately to determine system errors with
external measurement devices. Up to three modules, in any combination, can be inserted into a single
mainframe. The DAQ970A/DAQ973A’s internal DMM connections are accessible only through the
适用型号 DAQM900A, DAQM901A, DAQM902A, DAQM908A, and DAQM910A low-frequency multiplexers. On-
module screw terminals accept wire sizes from 16-gage to 22-gage. A twenty-gage wire is recommended
for high channel count applications. The DAQM905A RF Multiplexer uses SMB connectors. A standard
set of (10) BNC-to-SMB adapter cables is provided with each RF module for convenient BNC
适用型号 DAQM900A DAQM901A DAQM902A DAQM903A DAQM904A DAQM905A DAQM908A DAQM910A
Number of channels 20 20 + 2 16 20 (SPDT) 4 x 8 (2 wire) Dual
1x4
(50Ω)
Scanning speed 450 ch/s 80 ch/s 250 ch/s 80 ch/s
80 ch/s
Open/close speed 120 ch/s 120 ch/s 120 ch/s 120 ch/s 60 ch/s 70 ch/s
120 ch/s
Voltage AC/DC Yes3,4 Yes Yes No No No Yes Yes
Ohms – 2 wire Yes2 Yes Yes5 No No No Yes Yes
Ohms – 4 wire Yes2 Yes Yes5 No No No No Yes
RTD
2-wire No Yes Yes No No No Yes Yes
RTD
4-wire No Yes Yes No No No No Yes
Voltage (dc, ac rms) 120 V 300 V 300 V 300 V 300 V 42 V 300 V
40 Vpk
Current (dc, ac rms) 0.02 A 1 A 50 mA 1 A 1 A 0.7 A 1 A
1 A
Power (W, VA) 2.4 W 50 W 2 W 50 W 50 W 50 W 50 W
50 W
Offset voltage (incremental to DMM specs)
< 4 µV 0 µV6 < 4 µV < 1 µV < 1 µV < 4 µV < 1 µV
0 µV6
Offset resistance (4-wire) (incremental to DMM specs)
< 4 mΩ 0 mΩ6 < 4 Ω
0 mΩ6
R < 50 Ω < 1.0 Ω < 1.0 Ω < 0.2 Ω < 1.0 Ω < 0.5 Ω < 1.0 Ω <
1.0 Ω
条件：1. DMM accuracy assumes measurement with DAQM901A. For 900 module Ω measurements - see note 2.
2. The series resistance of the DAQM900A limits the use of the 100 Ω and 1 kΩ resistance range. This limits the precision of 2 -
DAQM900A is 1 MΩ. The 10 MΩ and above ranges are not specified in this module.
3. For AC Volts —This module's input impedance decreases with frequency. A source impedance of 5 Ω or less will maintain
specifications over the full frequency range, and a source impedance of 50 ohms or less will maintain specifications to 5 kHz.
4. Additional settling time may be needed for DC Volts due to the short integration time and higher source impedance.
5. Resistance range ≥ 1 MΩ is Typical.
6. Absolute Offset is < 2µV, Incremental Offset to 901 = 0µV. 2µV included in DCV’s % of range specs. The offset for this
module is already included in the specifications above. 1. Errors included in DMM measurement accuracy specifications. 2. This module has an Armature backplane & 2 W/4 W relays with 100 M operational life (FET life within banks is unlimited).
3. Applies to resistive loads only.
Earth > 10 GΩ > 10 GΩ > 10 GΩ > 10 GΩ > 10 GΩ > 1 GΩ > 10 GΩ >
10 GΩ
wire Ω on resistance. Keysight recommends the use of 4 -wire Ω for these
2 ranges. The maximum resistance range of
Limiting backplane &
2 W/4 W relay cycling is recommended.
Multiplexer Multiplexer Multiplexer Actuator Matrix RF multiplexer Multiplexer Multiplexer
Ch-Ch crosstalk (at 1 MHz) NA - 50 dB
-55 dB - 60 dB - 50 dB - 110 dB - 25 dB - 50 dB
Capacitance (Hi-Lo) NA < 50 pF < 65 pF 10 pF < 50 pF < 20 pF < 50 pF <
50 pF
Capacitance (Lo-Earth) NA < 150 pF < 135 pF < 80 pF < 80 pF NA < 80 pF <
150 pF
Volt-Hertz limit 10˄8 10˄8 10˄8 10˄8 10˄8 10˄10 10˄8
10˄8
T/C CRJ accuracy1 0.8 ºC 0.8 ºC 0.8 ºC
0.8 ºC
Bank2
100 M 100 M 100 M 100 M 5 M 100 M
100 M
Switch life (rated load)3
条件：Characteristics – nominal: DAQM905A
Bank2
100 K 100 K 100 K 100 K 100 K 100 K
100 K
Operating temperature All cards
0 to 55 ºC
Storage temperature All cards
-40 ºC to 70 ºC
Humidity (non-condensing) All cards
40 ºC to 80% RH
AC 10 MHz 100 MHz 500 MHz 1 GHz 1.5 GHz
2 GHz
Insertion loss (dB) -0.1 -0.4 -0.6 -1 -1.2
-3
SWR 1.02 1.05 1.2 1.2 1.3
1.4
Choose between the broad functionality of the DAQM901A, the high-speed scanning of the DAQM902A,
the DAQM900A solid-state module, the single-ended density of the DAQM908A, or the enhanced low
voltage protection of the DAQM910A. These five modules are the only way to connect to the
DAQ970A/DAQ973A internal DMM. They can be used to scan with external instruments as well. All
multiplexer modules employ break-before-make scanning, ensuring only one closed channel (or channel
20-Channel General Purpose Multiplexer
• 450 ch/s scanning
• Built-in thermocouple reference junction
条件：both HI and LO inputs, thus providing fully isolated inputs to the internal DMM or an external instrument.
reference junction to minimize errors due to thermal gradients when measuring thermocouples.
• 120 V switching
The DAQM900A module is divided into two banks of 10 two-wire channels each. All
20 channels switch
During
4-wire resistance measurements, channels from Bank A are automatically paired with channels
from Bank B to provide the source and sense connections. The module has a built-in thermocouple
20-Channel General Purpose Multiplexer
• 80 ch/s scanning
• Built-in thermocouple reference junction
• 300 V switching
The Keysight DAQM901A is the most versatile multiplexer for general-purpose scanning. It combines
dense, multi-function switching with 80-channel/second scan rates to address a broad spectrum of data
Two- and four-wire channels can be mixed on the same module. Two additional fused inputs (22
channels total) route up to 1 A of current to the internal DMM, allowing AC and DC current measurements
16-Channel High-Speed Multiplexer
• Scanning up to 250 ch/s
• Built-in thermocouple reference junction
条件：The Keysight DAQM902A employs reed relays to achieve scan rates of up to 250 channels per second.
This module is suitable for high-throughput automated test applications and high-speed data logging and
条件：module. User-provided shunt resistors are required for current measurements.
Sixteen two-wire inputs switch up to 300 V. Two- and four-wire channels may be mixed on the same
20-Channel Actuator/General Purpose Switch
• SPDT (Form C) latching relays
• 300 V
1 A actuation and control
This general-purpose switch module has
20 independent single-pole, double-throw (SPDT) relays. It can
cycle power to products under test, control indicator and status lights, and actuate external power relays
and solenoids. It can also be combined with matrix and multiplexer modules to build custom switch
systems. Its 300 V
1 A contacts can handle up to 50 W, enough for many powerline switching
4x8 Two-wire Matrix Switch
• 32 two-wire cross-points
The Keysight DAQM904A provides the most flexible connection path between your device under test and
your test equipment, allowing different instruments to be connected to multiple points on your DUT
Rows or columns may be connected between multiple modules to build 8x8
4x16, or larger matrices with
up to 96 cross-points in a single frame.
Dual 4-Channel RF Multiplexer
50 Ω
• 2 GHz bandwidth
• BNC to SMB adapter cables included
The Keysight DAQM905A RF multiplexers offer broadband switching capabilities for high-frequency and
pulsed signals. Use them to route test signals between your device under test and your signal generator,
oscilloscope, spectrum analyzer, or other instrumentation
The RF multiplexers are arranged as two independent
1x4 multiplexers, each with a common shield and
a switched center conductor. Connections can be made directly to SMB inputs with 2 GHz usable
bandwidth or to the BNC-to-SMB adapters provided with 1 GHz bandwidth. Multiple banks may be
cascaded together for applications requiring even larger topologies—create a
16:1 multiplexer in a single
frame.
50 Ω MUX typical AC performance graphs
条件：logging alarm conditions even between scans.
• 18 bits of digital input and output
• 100 kHz totalizer input
• Two ± 12 V analog outputs (Voltage mode) or
± 24 mA outputs (Current mode)
The Keysight DAQM907A allows great flexibility for various sense and control applications. It combines
two 8-bit digital input and output ports, a 100 kHz gated totalizer, and two ± 12 V or
± 24 mA analog
outputs—all on a single earth-referenced module. The digital inputs and totalizer input may be included in
a scan. Alarm limits for the digital and event counter inputs are evaluated continuously, capturing and
In addition, it has two additional channels (Channels
6 and 7) that can sense output current when
四、DAQM907A Multifunction Module Specifications
Measurement functionality
Digital I/O (Port 1, 2)
18 bits, Input or Output, non-isolated
Analog outputs 2 channels, ± 12 V (Voltage mode) or
± 24 mA (Current mode)
Characteristics – typical 1, 2
3
Voltage ± 0.027% of output +
4.4 mV
Current ± 0.115% of output +
4.4 µA
DIO Port 1, 2
8-bit, input or output, non-isolated
Vout(L) < 0.8 V @ lout =
-400 mA
Vout(H) > 2.4 V @ lout =
1 mA
Vin(H) max <
42 V with external open drain pull-up
Alarming Maskable pattern match or state change
Speed
4 ms (max) alarm sampling
Latency
5 ms (typical) to DAQ970A/DAQ973A alarm output
Totalize input 100 kHz (max) Rising or falling edge, programmable, min H or L time
5µS
Signal level 1 Vp-p (min)
42 Vpk (max)
Threshold
0 V or TTL, jumper selectable
Count reset Manual or Read + Reset
条件：1. ACAL required within the last 30 days to achieve performance accuracies.
2. ACAL assumes ± 2 ºC with no additional TC adders.
3. Mainframe DMM – calibrated through the DAQM901A module.
DAC (1, 2) ± 12 V or
± 24 mA non-isolated
Voltage mode current
15 mA max per channel
Current mode compliance
12 V
Settling time
1 ms to 0.01% of output
Use the digital outputs with an external power supply to control microwave switches and attenuators,
solenoids, power relays, indicators, and more. Use the digital inputs to sense limit switch and digital bus
status. There are no complex handshake modes; reads and writes are initiated either from the front panel
Port 1, 2
8-bit, input or output, non-isolated
Vout(L) < 0.8 V @ Iout =
–400 mA
Vout(H) > 2.4 V @ Iout =
1 mA
Vin(H) max <
42 V with external open drain pull-up
Alarming Maskable pattern match or state change
Alarm Speed
4 ms (max) alarm sampling
Alarm Latency
5 ms (typical) to DAQ970A/DAQ973A alarm output
条件：Count events from devices like photo interrupters, limit switches, and Hall-effect sensors.
bits of resolution, it can count events at full speed for nearly 11 minutes without an overflow.
It keeps an updated total, which can be read via the front panel or programmatically at any time. With 26
Totalize input
100 kHz (max) Rising or falling edge, programmable
Signal level 1 Vp-p (min)
42 Vpk (max)
Threshold
0 V or TTL, jumper selectable
Count reset Manual or Read + Reset
条件：systems. The outputs are programmed directly in volts from the front panel or the bus.
Use the two electronically calibrated analog outputs to source bias voltages to your device under test, to
control your analog programmable power supplies, or use the outputs as setpoints for your control
In addition, it has two additional channels (Channels
6 and 7) that can sense output current when
DAC 1, 2 ± 12 V (Voltage mode) or
± 24 mA (Current mode) analog outputs
IOUT ±15 mA max at voltage output mode per channel
± 24 mA Current output mode per channel
Settling time
1 ms to 0.01% of output
Accuracy ± (% of output + mV), 1 year
± 5 °C
Voltage: ± 0.027% output +
4.4 mV
Current: ± 0.115% of output +
4.4 uA
40-Channel Single-Ended Multiplexer
• 80 ch/s scanning
• Single-wire switching for common low applications
Use the Keysight DAQM908A for the greatest density in common low applications, such as battery tests,
component characterization, and benchtop testing. Each module switches
40 one-wire inputs. All two-wire
internal measurements except current are supported. The module's low connection is isolated from the
Earth and can float up to 300 V.
4-Channel
24-bit Digitizer
• Up to 800 kSa/s at 24-bit
• 时间/频率 domain 测量（含） Benchvue DAQ
条件：channels with a sampling rate as high as 800k samples per second and a maximum resolution of 24 bits.
each can provide up to 4mA of constant current to power up an external IEPE transducer.
The DAQM909A is a four-channel digitizer module capable of providing four simultaneously sampled
The input channels of the DAQM909A can be configured as differential inputs or single-ended inputs, and
When three DAQM909A modules are inserted within the same instrument, all
12 channels can be
ADC per channel 800 kSa/s @
24-bit
Range (Hi, Lo Input to Earth)1 0.3 Vpk, 1 Vpk, 3 Vpk
18 Vpk
Range (Differential input) 0.6 Vpk, 2 Vpk, 6 Vpk
36 Vpk
Range (Differential input – sinewave Vrms)2 0.42 Vrms, 1.4 Vrms. 4.2 Vrms
25 Vrms
Residual noise (20 Hz – 20 kHz) 7 µVrms, 16 µVrms, 52 µVrms
175 µVrms
IEPE current source OFF or ON, ON (2mA – 4mA)
IEPE currents source compliance voltage
20 V
Pre-trigger count
0 to sample count
外部触发输入 (one per 模块) TTL compatible
External trigger delay 0 – 1000s
1 µs steps
External trigger latency
1-sample
External Trigger-In terminals Screw terminal (≥
20-gage wire)
Measurement input terminals Screw terminal (≥
20-gage wire)
Time-stamped measurements Yes (Acoustic Start)
Acquisition memory/channel
16M to 48M Samples
Accuracy (DC)1 0.017% of readings +
0.004% of range (ACAL)
THD (1 kHz)2 - 103 dB
SFDR (1 kHz)2 - 105 dB
THD (20 Hz - 20 kHz)
2,3 - 83 dB
SFDR (20 Hz - 20 kHz)2 - 85 dB
Flatness (dc - 20 kHz)
0.1 dB
Input impedance (Hi or Lo to Earth) 1 MΩ | |
400 pF
Single-Ended (SE) Lo-Earth
150 Ω
A/D converter (per channel)
24-bit Delta-Sigma
Time domain 800 k/2˄n n=0,1,2,…
9
Frequency domain 100 k/2˄n n=0,1,2,…
6
Time domain (-3 dB)
0.2*Fs or 125 kHz max
Frequency domain (-0.1 dB)
0.4*Fs or 30 kHz max
Analog bandwidth (-3 dB)
125 kHz (measured)
Channel-to-channel gain match (1 kHz)
0.003 dB
Channel to channel phase match (1 kHz)4
0.045º
Channel to Channel cross-talk (1 kHz)4
-100 dB
条件：1. AC accuracy = DC accuracy + Flatness
2. Balanced differential input, amplitude = range max -1dB (and < 12Vrms), 50kSa/s, frequency mode, 20kHz analysis
bandwidth, DC -coupled. 3. THD analysis BW is up to 20kHz. All harmonics above 20kHz are excluded. Worst case THD is usually at 6.67kHz. 4. Performance within the same module.
Range (0.3, 1, 3 Vpk)
± 8 V
Range (18 Vpk range)
± 18 V
Common mode rejection
60 dB (dc – 1 kHz, DIFF in)
Overvoltage protection
± 42 V
Low Voltage
20-Channel Armature Multiplexer
• 80 ch/s scanning
• Built-in thermocouple reference junction
条件：Vpk, is detected, then the backplane switches open automatically in less than 15 ms.
• 40 Vpk switching
The Keysight DAQM910A is a versatile multiplexer for general-purpose scanning. It combines dense,
multi-function switching with 80-channel/second scan rates to address a broad spectrum of data
acquisition applications. The DAQ970A/DAQ973A can combine high and low-voltage signals into a single
mainframe. The DAQM910A provides enhanced voltage protection to ensure that high-voltage signals
from the backplane will not be allowed on the DAQM910A user channels. If a high voltage signal, >±40
Two- and four-wire channels can be mixed on the same module. To support this module, the DAQ97XA
mainframe must have firmware revision
03.00 or above.
To rack mount a single instrument, order the adapter kit (part number: DAQ190A or 1CM124A)
To rack mount two instrument side-by-side, order the lock-link kit (part number: DAQ194A or 34194A) and
flange kit (part number: DAQ191A or 1CM107A)
Keysight enables innovators to push the boundaries of engineering by quickly solving
design, emulation, and test challenges to create the best product experiences. Start your
This information is subject to change without notice. © Keysight Technologies, 2018 – 202
5
Published in USA, January 20 , 202 5, 599
2-3168 EN
DAQ970A Data Acquisition System Mainframe with USB and LAN
DAQ973A Data Acquisition System Mainframe with USB, LAN, and GPIB
Option Z54 ANSI Z540 compliant calibration
DAQM900A
20-Channel solid-state multiplexer
DAQM901A
20-Channel armature multiplexer
DAQM902A
16-Channel reed multiplexer
DAQM903A
20-channel actuator/general-purpose switch
DAQM904A 4 x
8 Two-wire matrix switch
DAQM905A Dual 4-Channel RF multiplexer
50 Ω
DAQM907A Multifunction module
DAQM908A
40-Channel single-ended multiplexer
DAQM909A
4-Channel simultaneous sampling digitizer
DAQM910A Low voltage
20-channel armature multiplexer
Accessories 11062A Kelvin clip set 34307A 10-pack of J-type thermocouples 34308A
5-pac
以上指标摘自厂家官方数据手册，完整定义、测试条件与保证值口径以手册为准。完整指标、测试条件与定义口径请见产品页「软件和手册 | 白皮书」栏目中的官方数据手册。
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