Page 13
Find us at
www.keysight.com
Switch Modules
DAQM900A
DAQM901A
DAQM902A
DAQM903A
DAQM904A
DAQM905A
DAQM908A
General
Number of channels
20
20 + 2
16
20 (SPDT)
4x8 (2 wire)
Dual 1x4(50
ohm)
40 (1 wire)
Scanning speed
450 Ch/s
80 ch/s
250 ch/s
100 ch/s
Open/close speed
120 ch/s
120 ch/s
120 Ch/s
120 ch/s
60 ch/s
70 ch/s
Internal DMM measurement functions supported
Voltage AC/DC
Yes
3, 4
Yes
Yes
No
No
No
Yes
Current AC/DC
No
Yes
No
No
No
No
No
Frequency/period
Yes
Yes
Yes
No
No
No
Yes
Ohms - 2 wire
Yes
2
Yes
Yes
5
No
No
No
Yes
Ohms - 4 wire
Yes
2
Yes
Yes
5
No
No
No
No
Thermocouple
Yes
Yes
Yes
No
No
No
No
RTD 2-wire
No
Yes
Yes
No
No
No
Yes
RTD 4-wire
No
Yes
Yes
No
No
No
No
Thermistor
No
Yes
Yes
No
No
No
Yes
Capacitance
No
Yes
Yes
No
No
No
Yes
Characteristics - typical: Input
Max voltage (dc, ac rms)
120V
300V
300 V
300 V
300 V
42 V
300 V
Max current (dc, ac rms)
.02 A
1 A
50 mA
1 A
1 A
.7 A
1 A
Power (W, VA)
2.4 W
50 W
2 W
50 W
50 W
50 W
50 W
Characteristics - typical: DC
Offset voltage
(incremental to DMM specs)
< 4 uV
0 uV
7
< 4 uV
< 1 uV
< 1 uV
< 4 uV
< 1 uV
Offset resistance (4-wire)
(incremental to the DMM specs)
< 4 mΩ
0 mΩ
7
< 4 mΩ
Initial closed channel R
< 50 ohms
< 1.0 ohms
< 1.0 ohms
< 0.2 ohms
< 1.0 ohms
< .5 ohms
< 1.0 ohms
Isolation Ch-Ch, Ch-Earth
> 10 G ohm
> 10 G ohm
> 10 G ohm
> 10 G ohm
> 10 G ohm
> 1 G ohm
> 10 G ohm
Characteristics - typical: AC
Ch-Ch crosstalk (@ 1 Mhz)
NA
- 50 db
- 55 db
- 60db
- 50 db
-110 db
- 25 db
Capacitance (Hi-Lo)
NA
< 50 pF
< 65 pF
10 pF
< 50 pF
< 20 pF
< 50 pF
Capacitance (Lo-Earth)
NA
< 150 pF
< 135 pF
< 80 pF
< 80 pF
NA
< 80 pF
Volt-Hertz limit
10^8
10^8
10^8
10^8
10^8
10^10
10^8
Characteristics - typical: Other
T/C CRJ accuracy
Switch life (no load)
Unlimited within
FET Banks
6
100 M
100 M
100 M
100 M
5 M
100 M
Switch life (rated load)
Unlimited within
FET Banks
6
100 K
100 K
100 K
100 K
100 K
100 K
DAQM905A: Characteristics - Nominal
10 MHz
100 MHz
500 MHz
1 GHz
1.5 GHz
2 GHz
AC
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
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.
www.allice.de
Allice Messtechnik GmbH
