Keysight 34970A User Manual

18 | Keysight | 34970A Data Acquisition/Switch Unit Family - Technical Overview
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Single channel reading rates to I/O or internal memory
(See footnotes for conditions below) 34970A 34972A
into memory
readings/sec
to GPIB or RS232
readings/sec
to LAN, USB or
memory
readings/sec
Single channel ASCII readings 500 440 500
Single channel while changing scale
(eg MEAS dcV 10/MEAS dcV 1)
25 25 25
Single channel while changing function
(eg MEAS dcV/MEAS Ohms)
12 12 12
Scanning measurement rates to I/O or internal memory
(See footnotes for conditions below) 34970A 34972A
into memory
ch/sec
to GPIB or RS232
ch/sec
to LAN, USB or
memory
ch/sec
Scanning dcV or ohms channels
34901A/34908A 60 60 60
34902A 250 210 240
34902A into and out of memory (using INIT, FETCh) — 180 240
34902A with timestamp (using MEAS) — 150 240
34902A with scaling and alarms 220 190 220
34902A dcV and ohms on alternate channels 80 80 80
Scanning acV channels
(2)
34901A/34908A 50 50 50
34902A 100 90 100
Scanning temperature – thermistor or TC channels
34901A/34908A 50 50 50
34902A 160 150 150
Scanning digital in/totalizer channels
34907A Digital Input 275 250 275
34907A Totalizer 240 210 240
Data out of memory
(3)(4)
(FETCh of 50K readings)
(See footnotes for conditions below) 34970A 34972A
Single channel
[1] [2]
over GPIB
readings/sec
over RS232
readings/sec
over USB
readings/sec
over LAN or
memory
readings/sec
Readings 800 600 55 K 120 K
Readings with timestamp 450 320 35 K 60 K
Readings with all format options ON 310 230 25 K 50 K
[1] Speeds are for 4 1/2 digits, delay 0, display off, USB data logging off, autozero off, auto-ranging off unless otherwise noted� Use MEAS
command for best I/O performance� RS232 at 115 Kbaud�
[2] Maximum, with default delays defeated
[3] Assumes relative time format (time since start of scan)
[4] Typical rates assuming lightly loaded PC and limited other traffic on I/Os� LAN rates assume use of socket connection; VXI11 will be less�
[5] For fixed function and range, readings to memory, scaling/alarms/autozero off

Keysight 34970A Specifications

General

Maximum Voltage	300 V
Maximum Current	1 A
Relay Type	Electromechanical
Type	Data Acquisition/Switch Unit
Slots	3
Connectivity	GPIB, RS-232
DC Voltage Range	100 mV to 300 V
AC Voltage Range	100 mV to 300 V
Resistance Range	100 Ω to 100 MΩ
Switch Type	Multiplexer, Matrix, General Purpose
Voltage Measurement Range	100 mV to 300 V
Temperature Measurement	Thermocouple, RTD, Thermistor
Switching Speed	60 channels/sec
DC Current Range	1 mA to 1 A
AC Current Range	1 mA to 1 A
Frequency Range	3 Hz to 300 kHz
Scan Rate	Up to 250 channels/sec
Current Measurement Range	1 µA to 1 A
Resistance Measurement Range	100 mΩ to 100 MΩ