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User's
Manual
Have a qualified engineer perform simple adjustment of the 2560A at a specialized facility with sufficient
precision. The simple adjustment values are retained even when the settings are initialized.
If you need to adjust the 2560A more accurately than that is possible with the simple adjustment feature or if you
want calibration and adjustment to be performed at a YOKOGAWA factory, contact your nearest YOKOGAWA
dealer. If calibration and adjustment are performed at a YOKOGAWA factory, all settings will be initialized to
their factory default values including the simple adjustment values.
• Ground the instrument before connecting the instrument to the target device. The power cord
that comes with the instrument is a three-prong type power cord. Insert the power cord into a
grounded three-prong outlet.
• Be sure to turn off the output before connecting or disconnecting the target device.
French
• Relier l'instrument à la terre avant de le brancher sur l'appareil cible. Le cordon d'alimentation
livré avec l'instrument est doté de trois broches. Brancher le cordon d'alimentation sur une
prise de courant à trois plots mise à la terre.
• Toujours mettre hors tension avant de brancher ou de débrancher l'appareil cible.
In addition to the above items, be sure to observe the warnings and precautions provided in
the "Wiring Precautions" and "Connecting Wires" sections in the 2560A User's Manual, IM
2560A-01EN.
Required Equipment and Components
• Digital multimeter (DMM)
• Standard 0.1 Ω and 10 Ω resistors Y okogawa Test & Measurement Corporation 2792A03 and 2792A05, or
• Standard temperature device
• Thermocouple type K
• DC current sensor
Each piece of equipment and component must be calibrated and with sufficient precision.
Adjustment Conditions
• Ambient temperature: 23°C ± 2°C, humidity: 20%RH to 60%RH (no condensation), warm-up time: at least 60
minutes
• Permitted supply voltage range: 90 VAC to 132 VAC and 180 VAC to 264 VAC, permitted supply frequency
range: 48 Hz to 63 Hz
• For 100 mV and thermocouple adjustment ranges of the 2560A, perform adjustment with the 2560A output
terminal temperature balanced and stable. During adjustment, be careful in keeping the output terminal
temperature from changing.
• Set the DMM's integration time (NPLC) to 100PLC or longer.
NPLC: An acronym for Number of Power Line Cycles. It is a way of expressing the integration time.
*
Wiring
The 2560A and equipment are wired according to each function, namely voltage, current, thermocouple,
resistance, and internal RJC.
For the wiring diagrams, see the wiring examples in the later "Explanation" section.
After wiring, operate the 2560A according to the procedure on the next page.
Model 2560A
Precision DC Calibrator
Simple Adjustment Procedure
AVERTISSEMENT
Keysight Technologies 3458A or equivalent
equivalents
Coper Electronics ZC-114A or equivalent
JIS C1602 or IEC 60584-1 compliant product
Yokogawa Test & Measurement Corporation CT200 or equivalent
2nd Edition : October 2017 (YMI)
All Rights Reserved, Copyright © 2015, Yokogawa Test & Measurement Corporation
Printed in Japan
WARNING
IM 2560A-71EN 1/9
2nd Edition
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Summary of Contents for YOKOGAWA 2560A
- Page 1 The simple adjustment values are retained even when the settings are initialized. If you need to adjust the 2560A more accurately than that is possible with the simple adjustment feature or if you want calibration and adjustment to be performed at a YOKOGAWA factory, contact your nearest YOKOGAWA dealer.
- Page 2 Turn the deviation dials to set the password to “111”. Flip the PRESET switch down. When authentication is successful, the 2560A switches to simple adjustment mode. All the PRESET indicators turn off. PRESET indicators Deviation dials 4. Set the password “111”. PRESET switch 5. When authentication is successful, the 2560A switches to simple adjustment mode. IM 2560A-71EN...
- Page 3 (OUTPUT 2) Low voltage-current output terminals Internal RJC ±0 (OUTPUT 1) While viewing the measured value, turn the deviation dials to set the 2560A’s simple adjustment value. • When you change the simple adjustment value, all PRESET indicators turn on. • If the measuring instrument (DMM) is the 3458A, wait at least 5 seconds for adjustment ranges 1000 V, 10 A, and 30 A and at least 2 seconds for other adjustment ranges before reading the measured value. • For details on the adjustable range of each adjustment range, see the later explanation. To set the simple adjustment values of other adjustment points in the same adjustment range, repeat steps 8 and 9.
- Page 4 100 µA +100 µA 0 µA -100 µA 100 µA (Equivalent to ±0.1 µA) ±1000 ppm of the adjustment range 1 mA +1 mA 0 mA -1 mA 1 mA (equivalent to ±0.001 mA) ±1000 ppm of the adjustment range 10 mA +10 mA 0 mA -10 mA 10 mA (equivalent to ±0.01 mA) Depending on the DMM current range, you may not be able to attain sufficient accuracy. If necessary, use a standard resistor and adjust by using a DMM voltage range, as shown in the next section. Use either method depending on the accuracies of the available ranges on the DMM. IM 2560A-71EN...
- Page 5 2792A05 (when the 2560A is set to 100 mA range) 2792A03 (when the 2560A is set to 1 A range) 2560A FUNCTION: DCV RANGE: 1 V (when the 2560A is set to 100 mA range) RANGE: 100 mV (when the 2560A is set to 1 A range) Adjustment 2560A...
- Page 6 ±1000ppm of the adjustment range Thermocouple (TC) 50 mV 0 mV 100 mV (equivalent to ±0.1 mV) Resistance Wiring Example 2560A FUNCTION: OHMF (4wire) RANGE: 1 kΩ Adjustment 2560A Adjustment range Output at Each Adjustment Point Adjustable Range Range ±0 Resistance (OHM) ±500ppm of the adjustment range 1 kΩ, excitation 400 Ω 1 Ω (equivalent to ±0.2 Ω) current 1 mA IM 2560A-71EN...
- Page 7 Adjust to 0°C equivalent. FUNCTION: DCV RANGE: 100 mV Standard temperature device ZC-114A Adjustment • The internal RJC is affected by the adjustment results of the thermocouple adjustment range, mentioned earlier. Adjust the internal RJC after you have adjusted the thermocouple adjustment range. • Adjust to a value equivalent to 0°C by taking into account the error in the thermocouple that you will be using. • The 2560A output display is in unit of °C, but the output terminals produce the thermoelectromotive force corresponding to the specified temperature. • For details on handling the standard temperature device, follow the instruction manual of the device. 2560A Adjustment range Output at Each Adjustment Point Adjustable Range Range ±0 Internal RJC (RJC) 0°C...
- Page 8 <Current>: 100 uA, 1 mA, 10 mA, 100 mA, 1 A, depending on the :CALibrate:FUNCtion command 10 A, 30 A setting. If a value outside the adjustable range <Resistance>: 400OHM is specified, a “222:Dataout of range” error will Example :CALIBRATE:RANGE 1V occur. :CALIBRATE:RANGE? -> :CALIBRATE:RANGE 1.0E+00 Description • Before setting <Voltage>, use the :CALibrate:FUNCtion command to set the function to VOLTage. Before setting <Current>, use the :CALibrate:FUNCtion command to set the function to CURRent. Before setting <Resistance>, use the :CALibrate:FUNCtion command to set the function to RESistance. IM 2560A-71EN...
- Page 9 :CAL:READ 100.000E-06 1 mA range :CAL:READ 1.00000E-03 10 mA range :CAL:READ 10.0000E-03 100 mV, 100 mA, and TC range :CAL:READ 100.000E-03 1 V or 1 A range :CAL:READ 1.00000E+00 10 V or 10 A range :CAL:READ 10.0000E+00 30 A range :CAL:READ 30.0000E+00 100 V range :CAL:READ 100.000E+00 1000 V range :CAL:READ 1.00000E+03 400OHM range :CAL:READ 400.00E+00 :CAL:READ 0.000E+00 When the output is OFF :CAL:READ 9.91E+37 IM 2560A-71EN...
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