• Signal source: DCV, DCA, Resistance, RTD, TC (10 kinds), Frequency, Pulse
  • Measurement: DCV, DCA, ACV, Resistance, RTD, TC (10 kinds), Frequency, Pulse
  • Features: Simultaneous signal source and measurement capacity, a wide array of useful functions, Easy operation, Online communication function
  • Options: AC adapter (94012: For 100V AC, 94013: For 120V AC, 94016: For 220-240V AC), B9108WA RJ sensor, B9108XA Accessory carrying case, 91017 Communications cable

Specification - Model CA71

Auto-Step Output Function n value sent automatically when n/m function selection is selected (two options: approximately 2.5 seconds/step or approximately 5 seconds/step)
Sweep Functions Sweep time (two options: approximately 16 seconds or approximately 32 seconds)
Memory Function 50 value sets (generated and measured values are stored as value sets with the same address (up to 50 value sets can be stored))
Measuring Unit Maximum Input Voltage terminal: 300 V AC Current terminal: 120 mA DC
Current Terminal Input Protection Fuses: 125 mA/250 V
Measuring Unit Ground Voltage Maximum 300 V AC
Measurement Display Updating Rate Approximately once per second
Serial Interface Enabled when communication cable (RS232) is connected; sold separately as optional accessory
Display Segmented LCD (Approx. 76 mm × 48 mm)
Backlight LED backlight; auto-off after one minute (from when LIGHT key is turned on)
Power Supply Four AA alkaline batteries, or special AC adapter (sold separately)
Battery Life Measurement off, output 5 V DC/10 kO or greater: Approximately 40 hours Simultaneous signal generation/measurement, output 5 V DC/10 kO or greater: Approximately 20 hoursSimultaneous signal generation/measurement, output 20 mA/5 V: Approximately 12 hours (using alkaline batteries, with backlight off)
Auto-Power-Off Function Approx. 10 minutes (auto-power-off can be disabled through a DIP switch setting)
Applicable Standard EN55011: 1998, Class B, Group 1
EN61326-1: 1997 + A1: 1998
IEC61010-1, IEC61010-2-31
Insulation Resistance Across input terminal and output terminal, 500 V DC, 50 MO or greater
Withstand Voltage Across input terminal and output terminal, 3.7 kVAC, for one minute
Operating Temperature And Humidity Ranges 0 - 50°C, 20 - 80% RH (no condensation)
Storage Temperature And Humidity Ranges -20 - 50°C, 90% RH or less (no condensation)
External Dimensions Approx. 190 × 120 × 55 mm
Weight Approx. 730 g (including batteries)

Product Overview

Easy Operation The Handy Calibrator incorporates rotary switches for simple handling. Just open the carrying case cover and connect the cables, and you're ready to take measurements.
A Wide Array of Useful Functions
  • Source
    Values set in steps of 4-20 mA 24V DC Power Supply to Transmitter
  • Divided output (n/m) function
    Output settings are divided, eliminating the need for bothersome calculations for percentage output.
  • Autostep function
    Changes the output value in step form based on the setting from the divided output (n/m) function. Changes can be sourced automatically every 10% or 25%.
  • Online communication (CA71 only) RS-232C-compliant optically isolated interface
  • Sweep function
    Linearly increases or decrease the output. The increasing/decreasing time can be set to either 16 or 32 seconds.
  • Memory function
    Source values and measurements forming individual value sets can be saved to or read from the Handy Calibrator's internal memory (maximum 50 value sets).
  • Temperature monitor function

Parts & Acessories

Supplied Accessories CA71/SP1 includes Communications cable, data logging softare, 120V power supply, magnetic backing instrument case, source/measure cables, NIST traceable certification.
Standard Accessories Carrying case: 93016
Four AA alkaline batteries: A1070EB × 4
Fuse: A1501EF (for current terminal input protection)
Measurement lead cables (one red, one black): RD031
Signal generating lead cables (one red, two black): 98020
Terminal adapter: 99021
User’s manual: IM CA71-E
Optional Accessories (Sold Separately) AC adapter: 94012 (100 V AC power supply)
AC adapter: 94013 (120 V AC power supply)
AC adapter: 94016 (220–240 V AC power supply)
Accessory carrying case: B9108XA
Communication cable: 91017
RJ sensor: B9108WA (For reference junction compensation)
Spare Parts Carrying case: 93016
Fuse: A1501EF (for current terminal input protection)
Measurement lead cables (one red, one black): RD031
Signal generating lead cables (one red, two black): 98020
Terminal adapter: 99021


Download Software for CA71

Exemption from Responsibility

  1. Yokogawa Meters & Instruments assumes no liability to any party for any loss or damage, direct or indirect, caused by the use of the product, or any unpredictable defect of the product.
  2. Modification of the product is strictly prohibited.
  3. Reverse engineering such as the disassembly or decompilation of software is strictly prohibited.
  4. No portion of the product supplied by Yokogawa Meters & Instruments may be transferred, exchanged, leased or sublet for use by any third party without the prior permission of Yokogawa Meters & Instruments.


The communication function of CA71 Communication Software enables users to set output values of the CA71 on a PC. However, the range for generation/measurement should be selected using the rotary switch on the calibrator.

The following operations can be executed while monitoring the CA71 on the PC.

Data Receiving Memory-mode data or real-time data can be received
from the CA71.
Data Transmission Setting value of generation can be set and sent to the CA71.
Data Processing The data can be saved and forwarded to EXCEL.
A trend graph is created and shown on the PC screen.

Updating Histories

Sep, 2011 1.10b Ver. 1.10b supports Windows 7 and Excel 2010
Dec, 2010 1.10a Trouble in which installation fails with OS other than English was corrected.
Oct, 2009 1.10 Ver1.10 supports Windows Vista and Excel2007

System Requirements

CPU 300MHz or higher
1GHz or higher (Vista, 7)
OS Windows XP / Vista (32bit) / 7 (32bit/64bit)
Required space on the HDD 10 MB or greater
Recommended memory
128 MB or greater
1GB or greater (Vista, 7)
Serial I/O capability A serial port conforming to RS-232C standard
should be available
Software Microsoft Excel 2003 / 2007 / 2010

*Windows, Excel are registered trademarks of Microsoft Corporation

Download File

  1. Click links of "" to download the compressed file.
  2. Unzip it and install software according to install manual.

Sofware for CA71 (Ver. 1.10b) (4.37 MB)



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