METREL CS 2890 User manual

Power Simulator / Calibrator
CS 2890
Instruction manual
Version 1.4.2, Code No. 20 752 950

2
Distributor:
Manufacturer:
METREL d.d.
Ljubljanska cesta 77
1354 Horjul
Slovenia
web site: http://www.metrel.si
e-mail: [email protected]
Mark on your equipment certifies that it meets European Union requirements for EMC,
LVD, ROHS regulations.
© 2019 METREL
No part of this publication may be reproduced or utilized in any form or by any means
without permission in writing from METREL.

CS 2890 Power Simulator / Calibrator Table of contents
3
1Introduction.............................................................................................................9
1.1 Main Features ...................................................................................................9
1.1.1 Power Simulator mode ...............................................................................9
1.1.2 Calibrator mode........................................................................................10
1.1.3 Adjustment of Metrel PQ instruments.......................................................10
1.2 Safety considerations......................................................................................11
1.3 Applicable standards.......................................................................................11
1.4 Abbreviations...................................................................................................12
2Description............................................................................................................13
2.1 Front panel......................................................................................................13
2.2 Connector panel..............................................................................................14
2.3 Bottom view.....................................................................................................15
2.4 Accessories.....................................................................................................15
2.4.1 Standard accessories...............................................................................15
3General Setup.......................................................................................................16
3.1 Colour model...................................................................................................16
3.2 Calibrator.........................................................................................................17
3.2.1 Adjustment................................................................................................18
3.2.2 Adjustment of voltage output....................................................................20
3.2.3 Adjustment of current output.....................................................................22
3.3 Instrument info.................................................................................................25
4Operating the instrument –Power Simulator.....................................................26
4.1 Instrument status bar.......................................................................................27
4.2 Instrument keys...............................................................................................28
4.3 Instrument Main Menu.....................................................................................29
4.3.1 Power Simulator Menu .............................................................................29
4.3.2 Fundamental voltage................................................................................30
4.3.3 Fundamental current ................................................................................30
4.3.4 Network character ....................................................................................30
4.3.5 Network type.............................................................................................31
4.3.6 Voltage harmonics....................................................................................31
4.3.7 Current harmonics....................................................................................32
4.3.8 Flicker.......................................................................................................32
4.3.9 Voltage unbalance....................................................................................32
4.3.10 Current unbalance....................................................................................32
4.3.11 Frequency.................................................................................................33
4.3.12 Event type.................................................................................................33
4.3.13 Event occurrence......................................................................................33
4.3.14 Swap channels.........................................................................................33
4.3.15 Factory reset.............................................................................................34
4.4 Keyboard shortcuts .........................................................................................34
4.5 Scope screen ..................................................................................................35
4.6 Phase Diagram................................................................................................36
4.6.1 Phase diagram .........................................................................................37
4.6.2 Unbalance diagram ..................................................................................37
4.7 Harmonics.......................................................................................................38
4.7.1 Harmonics settings screen .......................................................................39
4.7.2 Histogram (Bar)........................................................................................40
4.8 Flickers............................................................................................................42
4.9 Edit menu........................................................................................................43

CS 2890 Power Simulator / Calibrator Table of contents
4
4.10 Events .............................................................................................................45
4.10.1 Dip............................................................................................................45
4.10.2 Swell.........................................................................................................46
4.10.3 Interrupt....................................................................................................47
4.10.4 Inrush .......................................................................................................48
4.10.5 Signalling..................................................................................................50
4.10.6 Transient...................................................................................................51
4.11 Swap connection terminals..............................................................................53
4.12 Instrument memory (microSD card) ................................................................53
4.12.1 Save/Recall signal parameters.................................................................54
5Instrument Usage –Power Simulator.................................................................57
5.1 Wiring of CS 2890 to Metrel’s PQ Analyser.....................................................57
5.2 Simulation campaign.......................................................................................58
5.2.1 Step 1: Connection setup .........................................................................58
5.2.2 Step 2: Power Simulator setup.................................................................59
5.2.3 Step 3: PQA setup....................................................................................59
5.2.4 Step 4: Measurement campaign...............................................................59
5.2.5 Step 5: Stop simulation.............................................................................59
6Instrument usage –Power Calibrator.................................................................60
6.1 Calibration of PQ instruments..........................................................................61
6.1.1 Calibration of PQ Analyser voltage inputs –MI 2893/MI 2892/MI 2885/MI
2883 .........................................................................................................61
6.1.2 Calibration of voltage input for Class S PQA (MI 2883 example) .............63
6.1.3 Calibration of voltage input for Class A PQA (MI 2892 example) .............64
6.1.4 Calibration of PQ Analyser current inputs –MI 2893/MI 2892/MI 2885/MI
2883 .........................................................................................................65
6.1.5 Calibration of current inputs for Class S PQA (MI 2883 example)............66
6.1.6 Calibration of current inputs for Class A PQA (MI 2892 example)............67
6.2 Calibration procedure......................................................................................68
6.2.1 Voltage .....................................................................................................68
6.2.2 Current......................................................................................................71
6.2.3 Frequency.................................................................................................73
6.3 Power Quality Analyser adjustment procedure................................................75
7Technical specifications......................................................................................76
7.1 General specifications.....................................................................................76
7.2 Signal generator..............................................................................................76
7.2.1 General description ..................................................................................76
7.2.2 Voltages....................................................................................................76
7.2.3 Current......................................................................................................77
7.2.4 Frequency.................................................................................................77
7.2.5 Flickers.....................................................................................................77
7.2.6 Voltage harmonics....................................................................................77
7.2.7 Current harmonics and THD.....................................................................77
7.2.8 Unbalance ................................................................................................77
7.2.9 Time and duration uncertainty..................................................................77
7.2.10 Calibrator/Adjustment...............................................................................78
8Maintenance..........................................................................................................79
8.1 Inserting batteries into the instrument .............................................................79
8.2 Batteries..........................................................................................................80

CS 2890 Power Simulator / Calibrator Table of contents
5
8.3 Precautions on charging new batteries or batteries unused for a longer period
........................................................................................................................81
8.4 Notes...............................................................................................................81
9Firmware upgrade ................................................................................................81
9.1.1 Requirements...........................................................................................81
9.1.2 Upgrade procedure...................................................................................82
10 Power supply considerations..............................................................................85
11 Cleaning ................................................................................................................85
11.1 Periodic calibration..........................................................................................86
11.2 Service ............................................................................................................86
12 Annex I –MI 2892 Calibration Certificate ...........................................................87
13 Annex II –CS 2890 Calibration Certificate .........................................................93
Table 1: Power Calibrator/Simulator standard accessories..........................................15
Table 2: Description of General setup options...............................................................16
Table 3: Keys in General setup menu............................................................................16
Table 4: Description of Calibrator options......................................................................17
Table 5: Keys in Calibration menu.................................................................................17
Table 6: Keys in Calibration menu.................................................................................18
Table 7: Keys for entering into Adjustment menu..........................................................18
Table 8: Description of Calibrator options......................................................................19
Table 9: Keys in General setup menu............................................................................19
Table 10: Keys in Instrument info screen.......................................................................25
Table 11: Instrument status bar description...................................................................27
Table 12: Shortcut keys.................................................................................................28
Table 13: Function keys.................................................................................................29
Table 14: Instrument Main menu options.......................................................................29
Table 15: Shortcut keys.................................................................................................34
Table 16: Instrument screen symbols and abbreviations...............................................36
Table 17: Keys in Scope screen....................................................................................36
Table 18: Instrument screen symbols and abbreviations...............................................37
Table 19: Keys in Phase diagram screen......................................................................37
Table 20: Instrument screen symbols and abbreviations...............................................38
Table 21: Keys in Unbalance diagram screen ...............................................................38
Table 22: Instrument screen symbols and abbreviations...............................................40
Table 23: Keys in Harmonics (METER) screens ...........................................................40
Table 24: Instrument screen symbols and abbreviations...............................................41
Table 25: Keys in Harmonics (BAR) screen ..................................................................41
Table 26: Instrument screen symbols and abbreviations...............................................42
Table 27: Keys in Flickers screen..................................................................................42
Table 28: Instrument screen symbols and abbreviations...............................................44
Table 29: Keys in Edit menu screen..............................................................................44
Table 30: Keys in dip settings submenu........................................................................45
Table 31: Keys in swell settings submenu.....................................................................47
Table 32: Keys in interrupt settings submenu................................................................48
Table 33: Keys in inrush settings submenu...................................................................50
Table 34: Keys in signalling settings submenu..............................................................51

CS 2890 Power Simulator / Calibrator Table of contents
6
Table 35: Keys in transient settings submenu ...............................................................52
Table 36: Keys in Swap connections screen .................................................................53
Table 37: SAVE/RECALL screen...................................................................................55
Table 37: MI 2883 voltage calibration performed with CS 2890 (Uncertainty based on
CS 2890 Calibration certificate).....................................................................................63
Table 38: MI 2892 voltage calibration performed with CS 2890 (Uncertainty based on
substandard Volt-meter Keysight 34461).......................................................................64
Table 39: MI 2883 current calibration performed with CS 2890 (Uncertainty based on
Calibration certificate)....................................................................................................66
Table 40: MI 2892 current calibration performed with CS 2890 (Uncertainty based on
substandard Volt-meter Keysight 34461).......................................................................67
Table 41: Calibration procedure - voltage......................................................................70
Table 42: Calibration procedure - current......................................................................73
Table 43: Calibration procedure - frequency..................................................................75

CS 2890 Power Simulator / Calibrator Table of contents
7
Figure 1: CS 2890 Power Simulator/Calibrator instrument..............................................9
Figure 2: Front panel .....................................................................................................13
Figure 3: Front connector panel.....................................................................................14
Figure 4: Upper connector panel ...................................................................................14
Figure 5: Bottom view....................................................................................................15
Figure 6: General setup menu.......................................................................................16
Figure 7: Colour representation of phase voltages........................................................16
Figure 8: Calibrator screen............................................................................................17
Figure 9: Calibrator screen - “Default” and “Adjusted” CS 2890 voltage output..........18
Figure 10: Adjustment screen........................................................................................19
Figure 11: CS 2890 Calibration certificate –voltage output...........................................20
Figure 12: Adjustment procedure using values from the calibration certificate..............20
Figure 13: Connection for the voltage adjustment procedure using substandard Volt-
meter .............................................................................................................................21
Figure 14: Voltage adjustment procedure using values from the substandard Volt-meter
.......................................................................................................................................22
Figure 15: CS 2890 Calibration certificate –current output...........................................22
Figure 16: Current adjustment procedure using values from the calibration certificate .23
Figure 17: Connection diagram for current adjustment procedure using substandard
Volt-meter......................................................................................................................23
Figure 18: Adjustment procedure using values from the substandard Volt-meter .........24
Figure 19: Reset of Adjusted values to default one .......................................................24
Figure 20: Voltage, Current value is NOT Adjusted (marked with sign “*”) ....................24
Figure 21: Voltage, Current value IS Adjusted (without sign “*”)....................................25
Figure 22: Instrument info screen..................................................................................25
Figure 23: Power Simulator Display symbols and keys description...............................26
Figure 24: Common display symbols and labels on SCOPE screen .............................27
Figure 25: Instrument status bar....................................................................................27
Figure 26: Main menu –Simulator window....................................................................29
Figure 27: Current lags voltage by 25° angle.................................................................31
Figure 28: Current leads voltage by 5° angle.................................................................31
Figure 29: Manual set time delay dialog........................................................................33
Figure 30: Swapping instrument channels.....................................................................34
Figure 31: Entering into Scope screen presentation......................................................35
Figure 32: Voltage and current waveform mode............................................................35
Figure 33: Voltage and current waveform mode - single mode and dual mode.............36
Figure 34: Phase diagram screen..................................................................................37
Figure 35: Unbalance diagram screen...........................................................................38
Figure 36: 230V fundamental voltage signal with added 5% of 3rd, 5th and 7th harmonic
.......................................................................................................................................39
Figure 37: Voltage harmonics settings screen...............................................................39
Figure 38: Current harmonics settings screen...............................................................39
Figure 39: Set harmonic selection window ....................................................................40
Figure 40: Harmonics histogram screen........................................................................41
Figure 41: Flicker settings menu....................................................................................42
Figure 42: U,I: Parameters screen.................................................................................43
Figure 43: Set voltage selection window........................................................................43
Figure 44: Set current selection window........................................................................43
Figure 45: Set phase selection window .........................................................................44
Figure 46: Set frequency selection window ...................................................................44

CS 2890 Power Simulator / Calibrator Table of contents
8
Figure 47: Dip event, 80 % UNom, 4 periods long...........................................................45
Figure 48: Dip settings submenu...................................................................................45
Figure 49: 5 periods long swell, 110 % UNom .................................................................46
Figure 50: Swell settings menu......................................................................................47
Figure 51: Interrupt 0 % UNom, 5 periods long................................................................47
Figure 52: Interrupt settings submenu...........................................................................48
Figure 53: Inrush on voltage..........................................................................................49
Figure 54: Inrush on current ..........................................................................................49
Figure 55: Inrush settings submenu...............................................................................50
Figure 56: Generated signalling, 10 % UNom, signalling frequency 316.0 Hz.................50
Figure 57: Signalling settings submenu.........................................................................51
Figure 58: Generated transient sample, captured by MI 2892 Power Master................52
Figure 59: Transient settings submenu..........................................................................52
Figure 60: Change sequence submenu screen.............................................................53
Figure 61: CS 2890 and MI 2892 connection –Power Simulator mode ........................57
Figure 62: Recommended simulation practice...............................................................58
Figure 63: Calibrator output terminals............................................................................61
Figure 64: Connection for calibration voltage input L1 on MI 2893/MI 2892/MI 2885/MI
2883...............................................................................................................................62
Figure 65: Connection for calibration of current input on MI 2893/MI 2892/MI 2885/MI
2883...............................................................................................................................65
Figure 66: Battery compartment ....................................................................................79
Figure 67: Closing the battery compartment cover........................................................80
Figure 68: PowerView update function..........................................................................82
Figure 69: Selecting USB communication .....................................................................82
Figure 70: Check for Firmware menu ............................................................................82
Figure 71: Version checker window...............................................................................83
Figure 72: New firmware is available for download........................................................83
Figure 73: FlashMe firmware upgrade software starting screen....................................83
Figure 74: FlashMe configuration screen.......................................................................84
Figure 75: FlashMe programming screen......................................................................85

CS 2890 Power Simulator / Calibrator Introduction
9
1 Introduction
The CS 2890 Power Simulator/Calibrator is handheld multifunction four-phase
instrument intended for simulation of typical voltages and current shapes and
situations on electrical network as well as for calibrating and adjusting procedures
of Metrel Power Quality devices: MI 2883, MI 2885, MI 2892 and MI 2893.
Figure 1: CS 2890 Power Simulator/Calibrator instrument
1.1 Main Features
1.1.1 Power Simulator mode
Simple and powerful waveform generator with various settings of PQ
phenomena’s;
4 voltage channels with wide simulation range: up to 300 Vrms in automatic
mode, up to 350 Vrms in manual mode;
4 current channels with current clamps simulation ratio 1 V / 1000 A;

CS 2890 Power Simulator / Calibrator Introduction
10
Simultaneous voltage and current generation with eight 16-bit DA converters for
accurate signal generation;
Various event simulation: dip, swell, interrupt, inrush, transient and signalling;
Voltage and current harmonics waveform simulation;
Unbalanced voltage and current waveform simulation;
Square flicker simulation;
Various character load/type combination simulation;
Saving predefined signal setup into SD memory card
4.3’’ (10.9 cm) TFT colour display.
1.1.2 Calibrator mode
Stable voltage output (between phases L1 –L2) for predefined voltage
calibration points for selected PQ Analyser: MI 2883/MI 2885/MI 2892/MI 2893:
o5-11-14-23-40-50-75-110-150-165-200-206-230-250-345-350-400-500V
Stable current output for predefined current calibration points for selected PQ
Analyser: MI 2883/MI 2885/MI 2892/MI 2893:
o0,050-0,100-0,200-1,000-2,000V …(50A-100A-200A-1000A-2000A)
Note:
calibration of Class S PQ Analysers: could be performed only with CS 2890
(uncertainty bellow 0.12%),
calibration of Class A PQ Analysers: could be performed by use of substandard
Volt-meter with the accuracy class at least 0.05%.
1.1.1.1 Adjustment of CS 2890 output values
Voltage between L1 –L2 terminals and current outputs (on the L1, L2, L3, N current
outputs) could be adjusted to exact value. To get the necessary correction, which
should be entered in “Adjustment”mode, follow calibrated values from the CS 2890
calibration certificate or by using substandard Volt-meter (reading the exact value).
Note: Before performing adjustment of CS 2890 output values, RESET of eventual
already entered correction values.
1.1.3 Adjustment of Metrel PQ instruments
In calibration mode the CS 2890 enables adjustment of Metrel PQ instruments (MI
2883, MI 2885, MI 2892 and MI 2893) in case of accuracy malfunction due to erased
calibration constants or other influences affecting the measurement accuracy. Since the
adjustment procedure is complex and requires additional sets of adapters, predefined
adjustment process; please contact Metrel or authorized dealer for further instructions.
Note: Adjustment could be done only by the qualified and trained persons.

CS 2890 Power Simulator / Calibrator Introduction
11
1.2 Safety considerations
To ensure operator safety while using the Power Simulator/Calibrator instruments and
to minimize the risk of damage to the instrument, please note the following general
warnings:
The instrument has been designed to ensure maximum operator safety. Usage in
a way other than specified in this manual may increase the risk of harm to the
operator!
Do not use the instrument and/or accessories if any visible damage is noticed!
The instrument contains no user serviceable parts. Only an authorized dealer
can carry out service or adjustment!
Only use approved accessories which are available from your distributor!
Instrument contains rechargeable NiMH batteries. The batteries should only be
replaced with the same type as defined on the battery placement label or in this
manual. Do not use standard batteries while power supply adapter/charger is
connected, otherwise they may explode!
Hazardous voltages exist inside the instrument. Disconnect all test leads,
remove the power supply cable and switch off the instrument before removing
battery compartment cover.
Maximum voltage between any phase and neutral output is 350 VRMS. Maximum
nominal voltage between phases is 700 VRMS.
Check Power Simulator/Calibrator wiring before turning on, in order to prevent
misuse and electrical shock.
1.3 Applicable standards
The SC 2890 Power Simulator/Calibrator is designed and tested in accordance with the
following standards:
Electromagnetic compatibility (EMC)
EN 61326-2-2: 2013
Electrical equipment for measurement, control
and laboratory use –EMC requirements –
Part 2-2: Particular requirements - Test
configurations, operational conditions and
performance criteria for portable test, measuring
and monitoring equipment used in low-voltage
distribution systems
Emission: Class A equipment (for industrial
purposes)
Immunity for equipment intended for use in
industrial locations
Safety (LVD)
EN 61010-1: 2010
Safety requirements for electrical equipment for

CS 2890 Power Simulator / Calibrator Introduction
12
measurement, control and laboratory use –
Part 1: General requirements
EN 61010-2-030: 2010
Safety requirements for electrical equipment for
measurement, control and laboratory use –
Part 2-030: Particular requirements for testing and
measuring circuits
EN 61010-031: 2015
Safety requirements for electrical equipment for
measurement, control and laboratory use –
Part 031: Safety requirements for hand-held
probe assemblies for electrical measurement and
test
EN 61010-2-032: 2012
Safety requirements for electrical equipment for
measurement, control and laboratory use
Part 031: Safety requirements for hand-held
probe assemblies for electrical measurement and
test
Note about EN and IEC standards:
Text of this manual contains references to European standards. All standards of EN
6XXXX (e.g. EN 61010) series are equivalent to IEC standards with the same number
(e.g. IEC 61010) and differ only in amended parts required by European harmonization
procedure.
1.4 Abbreviations
In this document following symbols and abbreviations are used:
UNom
Nominal voltage
Ix
Current output
N, GND, Lx
Voltage output
Ufund
Fundamental voltage
Ifund
Fundamental current
Uhn
n-th harmonic voltage
Ihn
n-th harmonic current
VRMS
RMS voltage
ARMS
RMS current
THDU
Voltage THD
THDI
Current THD

CS 2890 Power Simulator / Calibrator General description
13
2 Description
2.1 Front panel
Figure 2: Front panel
Front panel layout:
1. LCD
Colour TFT display, 4.3 inch (10.9 cm), 480 x 272 pixels.
2. F1 –F4
Function keys.
3. ARROW keys
Moves cursor and selects parameters.
4. ENTER key
Step into submenu.
5. ESC key
Exits any procedure, confirms new settings.
6. SHORTCUT keys
Quick access to main instrument functions.
7. LIGHT key
(BEEP OFF)
Adjust LCD backlight intensity: high/low/off
If the LIGHT key is pressed for more than 1.5 seconds,
beeper will be disabled. Press & hold again to enable it.
8. ON-OFF key
Turns on/off the instrument.

CS 2890 Power Simulator / Calibrator General description
14
2.2 Connector panel
1
23
N
Warnings!
Use safety test leads only!
Max. short-term voltage of external power
supply adapter is 14 V!
Always turn off Power
Simulator/Calibrator before plugging in or
plugging out test leads.
Figure 3: Front connector panel
Front connector panel layout:
1 Clamp-on current transformers (I1, I2, I3, IN) output terminals.
2 Voltage (L1, L2, L3, GND, N) output terminals.
3 12 V external power socket.
1234
Figure 4: Upper connector panel
Upper connector panel layout:
1 MicroSD card slot.
2 Not applicable.
3 Ethernet connector (Not applicable).
4 USB connector (used for FW upgrading).

CS 2890 Power Simulator / Calibrator General description
15
2.3 Bottom view
1
2
3
Figure 5: Bottom view
Bottom view layout:
1. Battery compartment cover.
2. Battery compartment screw (unscrew to replace the batteries).
3. Serial number label.
2.4 Accessories
2.4.1 Standard accessories
Table 1: Power Calibrator/Simulator standard accessories
Description
Pieces
Flexible shielded current leads A 1504
4
Colour coded voltage measurement leads A 1594
5
USB cable
1
Measurement DC lead A 1555
1
Adapter for current measurement leads A 1669
1
12 V / 3A Power supply adapter
1
NiMH rechargeable battery, type HR 6 (AA)
6
Soft carrying bag
1
Compact disc (CD) with manual
1
Calibration certificate
1

CS 2890 Power Simulator / Calibrator General setup
16
3 General Setup
General setup menu can be accessed by using SETTINGS key from Main
menu (Power Simulation mode). From the “GENERAL SETUP” menu, colour model for
displaying phase measurements can be reviewed, configured and saved. It is also
possible to view instrument information.
Figure 6: General setup menu
Table 2: Description of General setup options
Colour Model
Select colours for displaying phase measurements.
Calibration
Select calibration mode
Instrument info
Information about the instrument.
Table 3: Keys in General setup menu
Select submenu.
ENTER
Enters submenu.
Returns to the Main menu (Power Simulation mode)
3.1 Colour model
In COLOUR MODEL menu, user can change colour representation of phase voltages
and currents, according to his needs. There are some predefined colour schemes (EU,
USA, etc.) and a custom mode where user can set up its own colour model.
Figure 7: Colour representation of phase voltages

CS 2890 Power Simulator / Calibrator General setup
17
Selects Colour scheme.
ENTER
Returns to the General setup menu.
3.2 Calibrator
Calibration function is used for calibrating and adjusting of Metrel Power Quality
Analysers, like: MI 2883, MI 2885, MI 2892 and MI 2893. Calibrator assures stable
voltage reference for periodic control of the instruments.
Figure 8: Calibrator screen
Table 4: Description of Calibrator options
Instrument name
:
MI 2883, MI 2885, MI 2892 and MI 2893
Fundamental voltage
Select calibration test point for voltage output (5 ÷ 500 V)
Note: In the calibration mode, voltage is generated via
terminals L1 –L2
Fundamental current
Select voltage calibration point for current output terminals
(0,050 ÷ 2.000 V)
Frequency
Calibration frequency 50.00/60.00 Hz
Table 5: Keys in Calibration menu
F1
Activates adjustment and fine output voltages tuning. See next
section for details.
Select parameter value
Scrolls cursor between options
Returns to the GENERAL SETUP (one press); MAIN menu
(second press)
Note: After leaving CALIBRATION menu (test terminals L1 –L2) bi-phase voltage
automatically appears on DUT.

CS 2890 Power Simulator / Calibrator General setup
18
3.2.1 Adjustment
The main purpose of Adjustment menu is to generate exact voltage, which is used
during the calibration process of the Power Quality devices.
Note: Before performing adjustment of CS 2890 output values, RESET of eventual
already entered correction values.
To enter into ADJUSTMENT menu, press F1 (ADJUST) button from the Calibration
screen:
Figure 9: Calibrator screen - “Default” and “Adjusted” CS 2890 voltage output
Note: Default CS 2890 voltage output is note with sign “*” on the screen, Adjusted
value without sign “*”.
Table 6: Keys in Calibration menu
F1
Activates adjustment (ADJUST) and fine tuning of output
voltages. See next section for details.
Table 7: Keys for entering into Adjustment menu
Select parameter value: YES/NO
ENTER
Confirmation/Reject entering into Adjustment menu

CS 2890 Power Simulator / Calibrator General setup
19
Returns to Calibrator menu
Returns to General Setup menu
Each calibration test point can be fine adjusted (fine-tuned), in order to provide stabile
and absolute reference for the instrument. Exact values can be obtained from the
Calibration certificate or parallel connected substandard Volt-meter.
Figure 10: Adjustment screen
Table 8: Description of Calibrator options
Fundamental voltage
Select voltage calibration test point for adjustment
Fundamental current
Select current (voltage) calibration test point for adjustment
Current phase
Select current phase (for current generation only)
Frequency
Select frequency
Table 9: Keys in General setup menu
Select calibration point
Scrolls cursor between options
ENTER
Enters submenu for entering value measured by reference
voltmeter or getting it from the CS 2890 calibration certificate
Returns to the Main menu.

CS 2890 Power Simulator / Calibrator General setup
20
To ensure correct measurement, it is essential that the CS 2890 instrument is regularly
calibrated. If used continuously on a daily basis, a three-month calibration period is
recommended, otherwise annual calibration is sufficient.
3.2.2 Adjustment of voltage output
1. Adjustment of CS 2890 voltage (between terminals L1 –L2) by using
Calibration certificate:
Figure 11: CS 2890 Calibration certificate –voltage output
Selection of 5V on the CS 2890 generates 5,00450V on the CS 2890 output (value from
the calibration certificate), so it is necessary to adjust the voltage correction of 5,0045V.
Press ADJUST (1.) Press to Enter the Adjustment menu Press Enter and
enter the corrected value of 5,0045V and confirm the value by pressing Enter key
Figure 12: Adjustment procedure using values from the calibration certificate