521 Replacing the Eerom A1U5

The EEROM provides non-volatile storage for the serial number of the meter, meter configuration and calibration information. If the EEROM is replaced during repair, the new EEROM should be programmed with the 7-digit serial number, found on the rear panel of the meter. Use the following command to program the serial number into the EEROM:

SERIAL XXXXXXX (xxxxxxx denotes the 7-digit serial number. Note:

once entered, the serial number cannot be changed.)

Table 5-6. Calibration Steps and Related Components

Step

Range

Input

Related Components

VDC

1

100 mV

0.0000 V

A1VR1, A1Z3

2

100 mV

0.0900 V

A1VR1, A1Z3

3

100 mV

-0.0900 V

A1VR1, A1Z3

4

1000 mV

0.9000 V

A1VR1

5

100 mV

0.0900 V

A1VR1, A1Z3

6

300 mV

0.2900 V

A1VR1, A1Z3

7

3 V

2.9000 V

A1VR1, A1Z3

8

30 V

29.000 V

A1VR1, A1Z1, A1Z3

9

300 V

290.00 V

A1VR1, A1Z1, A1Z3

10

1000 V

1000.0 V

A1VR1, A1Z1, A1Z3

VAC

11

300 mV

0.0290 V

A1A1 A1VR1, A1Z2, A1Z3, A1Z4

12

300 mV

0.2900 V

A1A1 A1VR1, A1Z2, A1Z3, A1Z4

13

3 V

0.2900 V

A1A1 A1VR1, A1Z2, A1Z3, A1Z4

14

3 V

2.9000 V

A1A1 A1VR1, A1Z2, A1Z3, A1Z4

15

30 V

29.000 V

A1A1 A1VR1, A1Z2, A1Z3, A1Z4

16

300 V

290.00 V

A1A1 A1Z1, A1Z2, A1Z3, A1Z4

17

750 V

750.00 V

A1A1 A1Z1, A1Z2, A1Z3, A1Z4

DC mA

18

30 mA

29.000 mA

A1R2, A1VR1, A1Z3, A1F1

19

100 mA

100.00 mA

A1R2, A1VR1, A1Z3, A1F1

AC mA

20

30 mA

29.000 mA

A1A1

A1R2, A1VR1, A1Z2, A1Z3, A1Z4,

A1F1

21

100 mA

100.00 mA

A1A1

A1R2, A1VR1, A1Z2, A1Z3, A1Z4,

A1F1

DC A

22

10 A

10.000 A

A1R3, A1VR1, A1Z3, A1F2

AC A

23

10 A

2.0000 A

A1A1, A1R3, A1Z4, A1F2

24

10 A

10.000 A

A1A1, A1R3, A1VR1, A1Z3, A1Z4, A1F2

Ohms

25

300 W

190.00 W

A1Z1, A1Z3

26

3 kW

1.9000 kW

A1Z1, A1Z3

27

30 kW

19.000 kW

A1Z1, A1Z3

28

300 kW

190.00 kW

A1Z1, A1Z3

29

3 MW

1.9000 MW

A1Z1, A1Z3

Continuity/Hysteresis Threshold

30

0.000 mV

A1U1

31

20.00 mV

A1U1

Frequency

32

2.000 V p-p 10 kHz

A1Y1

Table 5-7. Components Unique to Calibration Steps

Related Component (Main PCA

Cal

A1A1

A1AR1

A1R2

A1R3

A1U1

A1VR1

A1Y1

A1Z1

A1Z2

A1Z3

A1Z4

Step

VDC

1

x

2

x

x

3

x

x

4

x

x

5

x

x

6

x

x

7

x

x

8

x

x

x

9

x

x

x

10

x

x

x

VAC

11

x

x

x

x

x

12

x

x

x

x

x

13

x

x

x

x

x

14

x

x

x

x

x

15

x

x

x

x

x

16

x

x

x

x

x

17

x

x

x

x

x

DC mA

18

x

x

x

19

x

x

x

AC mA

20

x

x

x

x

x

x

21

x

x

x

x

x

x

DC A

22

x

x

x

AC A

23

x

x

x

x

x

24

x

x

x

x

x

OHMS

25

x

x

26

x

x

27

x

x

28

x

x

29

x

x

Continuity/Hysteresis Threshold

30

x

31

x

Frequency

32

x

Table 5-8. Calibration Hierarchy

Calibration Type

Prior Calibration Required

DC Volts AC Volts DC Amps AC Amps Ohms

Continuity/Hysteresis Threshold Frequency

none DC Volts DC Volts DC Volts DC Volts none

Continuity/Hysteresis Threshold

Table 5-9. Calibration Constants

Calconst?

Valid Range

Description

1

0.97025 to 1.03775

VDC, range 1

2

0.97025 to 1.03775

VDC, range 2

3

0.97267 to 1.04554

VDC, range 3

4

0.96782 to 1.04035

VDC, range 4

5

0.96792 to 1.04045

VDC, range 5

6

0.9975 to 1.0025

100 mV gain

7

0.9975 to 1.0025

320 mV gain

8

0.9975 to 1.0025

3.2 V gain

9

-100 to 100

VAC offset, range 1

10

0.9725 to 1.0275

VAC, range 1

11

-100 to 100

VAC offset, ranges 2 through 4

12

0.9725 to 1.0275

VAC, range 2

13

0.9725 to 1.0275

VAC, range 3

14

0.9725 to 1.0275

VAC, range 4

15

0.9725 to 1.0275

VAC, range 5

16

0.9500 to 1.0500

ADC, range 1

17

0.9500 to 1.0500

ADC, range 2

18

0.9500 to 1.0500

ADC, range 3

19

0.9225 to 1.0775

AAC, range 1

20

0.9225 to 1.0775

AAC, range 2

21

-100 to 100

AAC offset, range 3

22

0.9225 to 1.0775

AAC, range 3

23

0.9990 to 1.0090

OHMS, range 1

24

1.0000 to 1.0100

OHMS, range 2

25

1.0040 to 1.0140

OHMS, range 3

26

0.9990 to 1.0090

OHMS, range 4

27

0.9990 to 1.0090

OHMS, range 5

28

0.9990 to 1.0090

OHMS, range 6

29

0.9886 to 1.0035

Slow Siemens

30

0.9910 to 1.0010

Medium and Fast Siemens

31

0.9999 to 1.0001

Frequency calibration

32

-10.0 to 10.0

Slow offset

33

1.0000 to 1.0006

Slow negative gain

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