Switch Modules - Keysight Technologies DAQ970A Technical Overview

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Switch Modules

General
Number of channels
Scanning speed
Open/close speed
Internal DMM measurement functions supported
Voltage AC/DC
Current AC/DC
Frequency/period
Ohms - 2 wire
Ohms - 4 wire
Thermocouple
RTD 2-wire
RTD 4-wire
Thermistor
Capacitance
Characteristics - typical: Input
Max voltage (dc, ac rms)
Max current (dc, ac rms)
Power (W, VA)
Characteristics - typical: DC
Offset voltage
(incremental to DMM specs)
Offset resistance (4-wire)
(incremental to the DMM specs)
Initial closed channel R
Isolation Ch-Ch, Ch-Earth
Characteristics - typical: AC
Ch-Ch crosstalk (@ 1 Mhz)
Capacitance (Hi-Lo)
Capacitance (Lo-Earth)
Volt-Hertz limit
Characteristics - typical: Other
T/C CRJ accuracy
Switch life (no load)
Switch life (rated load)
DAQM905A: Characteristics - Nominal
AC
Insertion loss (db)
SWR
1. DMM accuracy assumes measurement with DAQM901A. For 900 module Ohms measurements - see note 2.
2. The series resistance of the DAQM900A limits the use of the 100 ohm and 1kohm resistance range. The precision of 2 W ohms is limited by this on resistance. Keysight
recommends the use of 4-wire ohms for these 2 ranges. Maximum resistance range of DAQM900A is 1 Mohm The 10M ohm and above ranges are not specified on this
module.
3. For AC Volts - The input impedance of this module decreases with frequency. A source impedance of 5 ohms or less will maintain specifications over the full frequency range.
A source impedance of 50 ohms or less will maintain specifications to 5 KHz.
4. For DC Volts - Additional settling time may be needed for short integration time and higher source impedance.
5. Resistance range ≥ 1 MΩ is Typical
6. This module has an Armature backplane & 2 W/4 W relays with 100 M operational life (FET life within banks is unlimited). Limiting backplane & 2 W/4 W relay cycling is
recommended.
7. Absolute Offset is <2uV. Incremental Offset to 901 = 0 uV. 2uV included in DCV's % of range specs.
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DAQM900A DAQM901A
20 20 + 2
450 Ch/s 80 ch/s
120 ch/s
3, 4
Yes Yes
No Yes
Yes Yes
Yes 2 Yes
2
Yes Yes
Yes Yes
No Yes
No Yes
No Yes
No Yes
120V 300V
.02 A 1 A
2.4 W 50 W
< 4 uV 0 uV 7
7
< 4 mΩ 0 mΩ
< 50 ohms < 1.0 ohms
> 10 G ohm > 10 G ohm
NA - 50 db
NA < 50 pF
NA < 150 pF
10^8 10^8
Unlimited within 100 M
FET Banks 6
Unlimited within 100 K
FET Banks 6
10 MHz 100 MHz
-0.1 -0.4
1.02 1.05
Allice Messtechnik GmbH
DAQM902A DAQM903A
16 20 (SPDT)
250 ch/s
120 ch/s 120 Ch/s
Yes No
No No
Yes No
Yes 5 No
5
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
300 V 300 V
50 mA 1 A
2 W 50 W
< 4 uV < 1 uV
< 4 mΩ
< 1.0 ohms < 0.2 ohms
> 10 G ohm > 10 G ohm
- 55 db - 60db
< 65 pF 10 pF
< 135 pF < 80 pF
10^8 10^8
100 M 100 M
100 K 100 K
500 MHz 1 GHz
-0.6 -1
1.2 1.2
DAQM904A DAQM905A
4x8 (2 wire) Dual 1x4(50
ohm)
120 ch/s 60 ch/s
No No
No No
No No
No No
No No
No No
No No
No No
No No
No No
300 V 42 V
1 A .7 A
50 W 50 W
< 1 uV < 4 uV
< 1.0 ohms < .5 ohms
> 10 G ohm > 1 G ohm
- 50 db -110 db
< 50 pF < 20 pF
< 80 pF NA
10^8 10^10
100 M 5 M
100 K 100 K
1.5 GHz 2 GHz
-1.2 -3
1.3 1.4
DAQM908A
40 (1 wire)
100 ch/s
70 ch/s
Yes
No
Yes
Yes
No
No
Yes
No
Yes
Yes
300 V
1 A
50 W
< 1 uV
< 1.0 ohms
> 10 G ohm
- 25 db
< 50 pF
< 80 pF
10^8
100 M
100 K
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