HP 34902A 16 Channel Multiplexer (2/4 -wire)

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The HP 34902A employs reed relays to achieve scan rates up to 250 channels-per-second. Use this module for high-throughput automated test applications as well as high-speed data logging and monitoring tasks.

Sixteen two-wire inputs switch up to 300 V. Two- and four-wire channels may be mixed on the same module. User provided shunt resistors are required for current measurements.


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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.

HP 34902A 16-Channel Multiplexer
GENERAL
Number of Channels 16
2- wire and 4- wire
Connects to Internal DMM YES
Scanning Speed 250ch/s
Open/Close Speed 120/s
INPUT
Voltage (dc, ac rms) 300V
Current (dc, ac rms) 50mA
Power (W, VA) 2W
DC CHARACTERISTICS
Offset Voltage[1] <6µV
Initial Closed Channel R[1] <1 Ohm
Isolation ch-ch, ch-earth >10 G Ohm
AC CHARACTERISTICS
Bandwidth 10 MHz
ch-ch Cross Talk -45 db
Capacitance HI - LO <50 pF
Capacitance LO -Earth <80 pF
Volt-Hertz limit 108
OTHER
T/C Cold Junction Accuracy[1] (typical) 0.8°C
Switch Life No Load (typical) 100M
Switch Life Rated Load (typical)[2] 100k
Temperature Operating 0°C to 55°C
Temperature Storage -20°C to 70°C
Humidity (non-condensing) 40°C / 80% RH
[1] Errors included in DMM measurement accuracy specifications
[2] Applies to resistive loads only


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HP 34902A       16 Channel Multiplexer (2/4 -wire)

Related Modules HP 34901A 20 Channel Multiplexer (2/4 -wire) HP 34903A 20 Channel Actuator/GP Switch HP 34904A 4 x 8 Matrix HP 34905A 2 GHz Dual 1:4 RF Mux, 50 ohm HP 34906A 2 GHz Dual 1:4 RF Mux, 75 ohm HP 34907A Multifunction Module HP 34908A 40 Channel Single-Ended Multiplexer

Available accessories for this product include:


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Related HP 34970A Data Acquisition/Switch Unit product datasheets:

Related product families available online:



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