BK Precision 5390, 5380, 5370, 5360 User manual

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Instruction Manual for Models 5360 5370 5380

Premium Handheld DIGITAL MULTIMETERS

5390

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page


TEST INSTRUMENT SAFETY inside front cover
FEATURES
CONTROLS AND INDICATORS
OPERATING INSTRUCTIONS
POWER ON / OFF
PROGRAMMABLE POWERUP OPTIONS
FUNCTION SELECTION
RANGE SELECTION
ANALOG BARGRAPH, ZOOM
BACKLIGHT
HOLD & AUTO MEM MODE (AUTOSTORE)
RELATIVE MEASUREMENTS
PEAK HOLD MEASUREMENTS
SURV or MIN / MAX / AVG MODE
VOLTAGE MEASUREMENTS
CURRENT MEASUREMENTS
RESISTANCE MEASUREMENTS
CONTINUITY MEASUREMENTS
DIODE TESTING

CAPACITANCE MEASUREMENTS 17 FREQUENCY MEASUREMENTS 17 SELECTING IMPEDANCE FOR dBm AND RESISTIVE POWER MEASUREMENTS dBm MEASUREMENTS .................................... RESISTIVE POWER MEASUREMENT . DUTY CYCLE MEASUREMENTS PUL SE WIDTH MEASUREMENTS PULSE COUNT MEASUREMENTS .................................... POWER DISTURBANCE INDICATION 20 TEMPERATURE MEASUREMENT 20 MAINTENANCE . INSTRUMENT REPAIR SERVICE 22 SPECIFICATIONS .................................... ACCESSORIES .................................... CUSTOMER SUPPORT .................................... WARRANTY SERVICE INSTRUCTIONS 30 LIMITED THREE-YEAR WARRANTY 31

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FEATURES

The B+K Precision Model 5390 is a highly accurate handheld digital multimeter with a multitude of highly advanced features. It is capable of taking the following measurements:

ac voltages with ac (or rms) capacitive coupling
ac voltages with ac + dc (or trms) direct coupling
dc voltages
ac current with ac (or rms) capacitive coupling
ac current with ac + dc (or trms) direct coupling
dc current
Resistance
Continuity
Capacitance
Diode threshold voltage
Frequency
Duty cycle
Pulse width
Pulse count
dBm
Resistive power

Features of the 5390 include:

0.025% DCV
0.07% Ohms
100 kHz ac response
Autoranging, bargraph, and zoom
Capacitance to 50,000 µF
Frequency, duty cycle, pulse width
dB across 1 Ω to 10 kΩ
VA across 1 Ω to 10 KΩ
Power disturbance indicator
Min/Max/Avg

Model 5380 has the same accuracy as the 5390 and most of the measurement capabilities. It does not include the 5390's power disturbance indicator, zoom bargraph, pulse width, duty cycle, event counting, and VA measurement. It measures dB across 600 Ω only.

Model 5370 has the same accuracy as the 5390 for all functions except dc volts. It includes all of the measurement capabilities as the 5390 except for pulse width, event counting, and VA measurement. It also is capable of temperature measurement within 0.5°C using a platinum probe.

Model 5360 has the capability of taking many of the same measurements as the 5380, but at a lower accuracy. Its measurement capabilities do not include dBm, but does include duty cycle.

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FEATURES

All models include 50,000 count resolution, true rms (ac or ac + dc) built-in RS-232 capability, standard Certificate of Calibration, ASYC^®II (Advanced Safety Concept) design with IEC1010, IP677, and MIL-T-28800 compliance, a splash-proof sealed case, and a three-year warranty.

The standard SECURX test lead retainers, designed to work with shouldered test leads, ensure that the test leads will not be pulled out accidentally.

The display features clearly legible 14 mm (0.55 inch) high figures. All models except 5360 feature a backlit display.

Refer to the SPECIFICATION section of this manual for complete specifications for each of the models.

Refer to the ACCESSORIES section of this manual for a description of each of the standard and optional accessories for the multimeters.

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CONTROLS AND INDICATORS

Figures 1 through 4 illustrate each of the multimeters. Refer to the illustrations while reviewing the following descriptions of each of the controls.

NOTE

Throughout this section of the manual, instructions include short and long presses of buttons on the multimeter. A short press means less than one second and a long press means greater than one second.

Display. 50,000 count LCD display with 14 mm (0.55") high digits, automatic decimal point, minus sign and 34 segment bar graph. Indicates 5,000 counts in low resolution mode. Annunciators for all functions, units of measurement, blown fuse and for low battery. Overrange indicated by OL. Refer to Fig. 12 and the associated text for detailed description of the display.
2. Hz Button (5370 and 5390 only). Enables frequency functions when rotary Function Switch (7) is set to VAC, VDC, mVDC, mADC and 10ADC. Short presses engage frequency measurement, % positive duty cycle, % negative duty cycle, positive pulse count, negative pulse count, positive pulse width measurement, negative pulse width measurement, and back to original rotary Function Switch (7) setting. A long press at any time returns the unit back to its original rotary Function Switch setting.

3. SURV Button (5370, and 5390 only). Enables the SURVEILLANCE or MIN, MAX, AVG recording mode. A long press enables or disables the recording mode. Short presses display current values of MIN, MAX, or AVG measurements. The symbols flash with selected modes. The values are stored when the SURV mode is disabled or when the unit power is switched OFF. Short presses allow the MIN, MAX, AVG values to be read. A long press enables the SURV mode and clears the previous values.
Button (5370, 5380, and 5390 only). Turns the backlight of the LCD display on and off. The backlight turns off automatically after about 30 seconds.
5. HOLD Button. Toggles the data hold feature on and off for all functions, and enables the AUTO MEM MODE. A short press freezes the current reading on the display with the MEM annunciator on. Another short press releases the display. A long press enables the AUTO MEM MODE only in the VDC, mVDC, and VAC positions of the rotary Function Switch (7).
PK+/- Button. Enables the fast peak hold (positive and negative) capability when the rotary Function Switch (7) is set to VDC, mVDC, mADC, and 10ADC functions.
7. Function Switch. Rotary switch, selects function for AUTO ranging modes; selects function and some ranges for current modes. Primary function selected is indicated by white labeling of the switch position. The secondary function of each position is labeled in yellow and is activated by the yellow SEL/ON button as shown in Figures 6 through 11.

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CONTROLS AND INDICATORS

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Fig. 4 Model 5360 Controls

8. A Jack. Input for 10 A DC, AC, or DC+AC current range.
9. µA mA Jack. Input for DC, AC, or AC+DC currents up to 500 mA.
10. COM Jack. Input for common or reference test lead for all measurements.
11. VΩ⁺ → Jack. Input for DC, AC, and AC+DC Volts, capacitance, diode test, resistance, continuity, or frequency functions.
12. REL Button. Sets initial reading as the zero reference for making relative measurements. A short press enables the mode and sets the display to zero. Another short press disables the mode and returns the unit back to its normal mode. When in the REL mode, a long press displays the reference being used. The reference value may then be adjusted using the SEL/ON and RANGE buttons. The SEL/ON button is used to select the digits and the sign, while the RANGE button is used to increment the selected digit. A short press returns the unit to the REL measurement mode. Another short press returns the unit back to its normal mode.
13. RANGE Button. Manual ranging selector switch. A short press changes from the AUTO mode to MANUAL mode. Subsequent short presses advance range selection to the next higher range until the highest range is reached, then advances to the lowest range. A long press at any time returns the unit back to the AUTO ranging mode.
14. PRINT Button. Turns on the RS232 port and sends a measurement to the printer. A short press sends one measurement. A long press allows the user to define the rate at which the measurements are sent from 00000 sec (a single transmission) up to 9 hr, 59 min, 59 sec. The SEL/ON button is used to select the digits, while the RANGE button is used to increment the selected digit. A short press returns the unit to the PRINT mode. Another short press returns the unit to the normal mode.
15. SEL/ON Button (yellow). Selects the secondary functions of the rotary Function Switch (7) indicated in yellow. Toggles between DC, AC, and AC+DC for current measurements; toggles

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between capacitance and diode testing; toggles between ohms and continuity checking; toggles between DC and AC+DC voltage measurements; or toggles between AC voltage and dB/Hz measurements. Also used to turn on the multimeter after an automatic shutdown.

16. ZOOM Button (5370 and 5390 only). Expands the scale of the 34 segment analog bargraph by a factor of five for positive measurements and a factor of 11 for bipolar measurements.

Fig. 5 VAC Position

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CONTROLS AND INDICATORS

Fig. 11 °C Position

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CONTROLS AND INDICATORS

LCD INDICATORS

Figure 12 shows all the annunciators on the LCD display. Refer to this illustration while reviewing the following descriptions.

1. BAT indicates low battery. When the BAT symbol first appears the battery has approximately 10% (50 hours) of life remaining.
2. AUTO indicates that the instrument is in AUTO ranging mode. This is the standard mode for measurements that have more than one range.
3. REL illuminates when the instrument is set to the relative mode (short press of the REL button).
4. MIN MAX AVG illuminates when the instrument is placed in surveillance mode (long press of the SURV button). Each annunciator flashes when the meter displays the particular value (short press of the SURV button).
5. MEM flashes to signify that the instrument has been placed in the autostore mode (long press of the HOLD button).
6. AC+DC illuminates when the instrument is set to take AC+DC voltage or current measurements. AC illuminates when the instrument is set to take AC voltage or current measurements.
7. dB illuminates when the instrument is set to take dBm measurements (5370, 5380 and 5390).
% illuminates when the instrument is set to take duty cycle measurements (5370, 5380 and 5390).
VA illuminates when the instrument is set to take resistive power measurements (5390 only). The A illuminates alone when the instrument is set to take current measurements and the V illuminates alone for voltage measurements.

Fig. 12 LCD Display

10. F illuminates when the instrument is set to take capacitance measurements.
11. s illuminates when the instrument is set to take pulse width measurements.
12. Jilluminates when the instrument is set to check continuity.
13. Hz illuminates when the instrument is set to take frequency measurements.

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14. Ω illuminates when the instrument is set to take resistance measurements.
15. Unit range. The following annunciators illuminate to signify the units of measure being displayed. They are displayed with the particular unit of measure, for example MΩ for Megohm and μA for microamp. n represents nano (10^-9)
- μ represents micro (10^-6)
- m represents milli (10^-3)
- k represents kilo (10³)
- M represents Mega (10⁶)
16. AV Pulses illuminates when the instrument is set to take duty cycle, pulse width, and pulse count measurements. A signifies positive pulses and V signifies negative pulses.
(here) illuminates when the RS232 port is active. The port is active during a print function or when the instrument is connected to a computer using the B+K Precision Model 5300 Calibration Kit or Model 5350 Data Acquisition Kit.
18. ZOOM illuminates to signify that the bargraph scale has been expanded. The left and right bargraph scale indicators display the range of the bargraph.
19. illuminates when the instrument is set to test diodes.
20. Right bargraph scale displays the units for the bargraph at the right end of the scale.

21. (Harmonic disturbance) illuminates when the instrument is set to take power disturbance measurements. Three bars of the bargraph directly beneath the annunciator illuminate when a harmonic disturbance greater than 25 V is measured during power disturbance testing.
22. Bargraph . The 34-segment bargraph provides an analog display of the value.
23. Centered Zero. displays when the unit is set for bipolar measurement, indicating the zero position on the bargraph.
24. LINE illuminates when the instrument is set to take power disturbance measurements.
25. V (Transient disturbance) illuminates when the instrument is set to take power disturbance measurements. Three bars of the bargraph directly beneath the annunciator illuminate when a transient disturbance greater than 80 V is measured during power disturbance testing.
26. Left bargraph scale displays the units for the bargraph at the left end of the scale.
27. A (Dangerous voltage) annunciator illuminates to alert the operator that the instrument is measuring voltages greater than 24 V.
28. Value display. The 14 mm high digits display the value of the measurement being taken. A (minus sign) signifies a negative value. Positive values are implied and a positive sign is not displayed. The ° indicator to the left of the last digit signifies temperature measurement (5370 only). The last digit displays a C for Celsius or F for Fahrenheit during temperature measurements.

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Use of test equipment may expose the operator to electric shock hazards. Observe all instructions contained in the TEST INSTRU-MENT SAFETY section of this manual before using this instrument.

ECAUTION 3

The TEST INSTRUMENT SAFETY section of this manual lists maximum voltage and current input limits which must be observed. Failure to adhere to these limits may result in damage to the INSTRUMENT.

NOTE

POWER ON / OFF

Turn the unit on by rotating the Function Switch clockwise to the desired function. All the LCD display segments come on for a few seconds, then only the appropriate annunciators for the selected function stay on.

Turn the unit off by rotating the Function Switch to the OFF position. The AUTO POWER OFF feature prolongs battery life by automatically shutting off the unit after approximately half an hour if no switch is operated. To turn on the unit after an AUTO POWER OFF, press the yellow SEL/ON button.

NOTES

The AUTO POWER OFF feature is disabled when the unit is set to the SURV , PK +/- , pulse counting, and data print modes.

For user safety, the AUTO POWER OFF is also disabled when a dangerous voltage is present at the input jacks. The A indicator illuminates to signify the condition.

PROGRAMMABLE POWERUP OPTIONS

There are several operating modes that can be selected upon powerup. Typically, these modes are infrequently changed and are stored in nonvolatile memory so that the selection is retained until reprogrammed.

1. 50 Hz or 60 Hz rejection.

Hold down the HOLD button and set the rotary Function Switch to the appropriate position. The selection reverses the previous setting, is displayed for two seconds, and is stored in non-volatile memory.

2. 10MΩ / 1000M Ω input impedance for the mV range. (5370, 5380 and 5390 only).

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Hold down the RANGE button and set the rotary Function Switch to the appropriate position. The selection reverses the previous setting, is displayed for two seconds, and is stored in non-volatile memory.

3. 5,000-count low-resolution mode.

Hold down the REL button and set the rotary Function Switch to the appropriate position. The display shows 5,000 for two seconds.

NOTE

The low resolution mode is not stored in nonvolatile memory. If the unit is turned on after an AUTO POWER OFF with the SEL/ON button, the unit powers up in the normal 50,000 counthigh-resolution mode.

4. RS232 operation.

Hold down the PK +/- button and set the rotary Function Switch to the appropriate position. The display shows the RS232 indicator for two seconds. The RS232 mode is not stored in non-volatile memory.

FUNCTION SELECTION

The rotary Function Switch selects the primary function such as VAC, mVDC, VDC, Ω, –I–. All the Function Switch positions are dual or multifunctional with the primary function for each position indicated by WHITE labeling. The secondary functions for each position are indicated with YELLOW labeling, and are accessed with a press of the yellow SEL/ON button. For example, when the rotary Function is set to the 10ADC position, the DC current function is selected. A press of the yellow SEL/ON button puts the unit into the 10A AC (RMS) position, ready to measure AC cur-

rents with capacitive coupling. The AC annunciator illuminates on the LCD display. A second press of the SEL/ON button puts the unit into the 10A AC+DC (TRMS) position, ready to measure AC currents with direct coupling. The AC+DC annunciator illuminates on the LCD display. A third press of the SEL/ON button returns the unit back to the primary 10ADC function.

RANGE SELECTION

1. The AUTO ranging mode is automatically selected when the unit is turned on and whenever the rotary Function Switch is set to a new position (does not apply to single range functions such as mVDC, 10ADC or all the current ranges of the 5360).
2. A short press of the RANGE button changes the instrument to the MANUAL ranging mode. The AUTO annunciator of the LCD display turns off confirming the action. A short press advances the unit to the next higher range. Subsequent short presses advances the unit until the highest range is reached, then the next short press advances the unit to the lowest range.
3. A long press of the RANGE button at any time returns the unit to the AUTO ranging mode.
4. If the quantity to be measured is unknown, start with the highest range in the MANUAL mode, or use the AUTO ranging mode.
5. When an overrange is indicated (OL and beep), switch to the next higher range or until an on-scale measurement can be taken.

ANALOG BARGRAPH, ZOOM

The 34 segment analog bargraph feature is activated for measurements of voltage, current, resistance, frequency, and capacitance. Its update speed of 20 measurements/second is 10 times that of the digital display. This

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makes it suitable for measuring coarse adjustments of these parameters or indicating the direction of change of a varying quantity.

The ZOOM feature (5370 and 5390 only) expands the scale of bargraph around the measured digital reading to greatly enhance viewing fast changes. A short press of the ZOOM button increases this scale. Subsequent short presses keep expanding this scale until it returns back to its original full scale value. A long press of the ZOOM button at any time returns the bargraph back to full scale.

BACKLIGHT (5370, 5380 and 5390 only)

LCD displays work by reflecting light. As less ambient light is available, there is less apparent contrast between the LCD digits and the background, and it becomes more difficult to view the display. The backlight feature is useful in low ambient light conditions. A short press of the backlight (35) button turns on the display backlight. A second short press immediately turns off the backlight. If the multimeter is not being used, the backlight turns off automatically after about 30 seconds.

HOLD & AUTO MEM MODE (AUTOSTORE)

The HOLD button allows the user to freeze the current display or enable the AUTO MEM (Autostore) mode. A short press freezes the current display. A second short press releases the display.

The Autostore mode is used to obtain a stable voltage measurement when the user cannot look at the display and the measurement point simultaneously. Autostore is accessible in the VDC, mVDC, or VAC positions of the Function Switch.

1. A long press of the HOLD button sets the unit to the Autostore mode. The MEM annunciator flashes to confirm the selection.
2. Connect the test leads to the point to be measured. A beep indicates that the measurement is stable.

3. When the leads are removed from the test point, a second beep indicates that the reading has been stored, and the value can be viewed on the LCD display.
4. A second long press of the HOLD button returns the unit to its normal mode.

RELATIVE MEASUREMENTS

When the REL button is pressed, the present reading becomes the zero reference and all subsequent readings are displayed relative to this value. A second short press disables the mode and returns the unit back to its normal mode. When in the REL mode, a long press displays the reference being used. The reference value may then be adjusted using the SEL/ON and RANGE buttons. The SEL/ON button is used to select the digits and the sign, while the RANGE button is used to increment the selected digit. A short press of the REL button returns the unit to the relative measurement mode. Another short press returns the unit back to its normal mode.

PEAK HOLD MEASUREMENTS

Fast (<1 ms) positive and negative peak measurements can be made when the rotary Function Switch is set to VDC , mVDC , mADC , and 10ADC . A short press of the PK +/- button puts the unit into the positive peak detection mode, and changes the unit from the AUTO ranging mode to the MANUAL ranging mode, locking the unit on the range. If the potential peak is greater than full scale of the selected range, use the RANGE button to set the unit to the next higher range, or until an on-scale measurement is possible. The A annunciator of the LCD display confirms the selection. If a negative peak detection is anticipated, press the PK +/- button a second time. The V annunciator of the LCD display confirms the selection. To return the unit back to its normal mode, press the PK +/- button again.

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SURV or MIN / MAX / AVG MODE (5370 and 5390 only)

The surveillance mode is useful for recording the variation of the quantity (voltage, current, resistance, capacitance, etc.) being measured by the unit. Activation of the SURV mode locks the unit into its present range and deactivates the AUTO POWER OFF feature. If the unit is in the AUTO ranging mode, it changes to the MANUAL ranging mode. A long press of the SURV button enables or disables the recording mode. Short presses display current values of MIN, MAX, or AVG measurements. The annunciators flash with each selection.

The measurements are stored even when the SURV mode is disabled or the unit power is shut OFF. Short presses of the SURV button allow the MIN, MAX, or AVG values to be viewed. A long press enables the SURV mode and clears the previous values.

VOLTAGE MEASUREMENTS (AC, DC, AC+DC)

1. To measure DC voltage, set the rotary Function Switch to the VDC position. If the voltage is known to be less than 500 mV, the Function Switch may be set to mVDC.
2. To measure AC+DC (TRMS) voltage with direct coupling, press the yellow SEL/ON button with the rotary Function Switch in the VDC position.
3. To measure AC (RMS) voltage with capacitive coupling, set the rotary Function Switch to the VAC position.
Connect the red test lead to the VΩ^* → jack and the black test lead to the COM jack.

NOTE

The SECURX adapter for the input jacks locks the test leads securely so that they cannot accidentally be pulled out. To release a test lead, push the SECURX locking bar toward the LCD display and hold it while the test leads are pulled out.

5. Connect the test leads to points of measurement.
6. For DC measurements, a (-) sign is displayed for negative polarity; (+) positive polarity is implied and is not displayed. The V annunciator is displayed.
7. For AC measurements, the AC annunciator is displayed, and for AC+DC measurements, the AC+DC annunciator is displayed.

CURRENT MEASUREMENTS (AC, DC, AC+DC)

CAUTION

For current measurements, the meter must be connected in series with the load. If incorrectly connected (in parallel with the load), the meter presents a very low impedance (almost a short), which may blow the fuse or damage the meter or equipment under test.

1. To measure DC current, set the rotary Function Switch to the desired mADC or 10ADC position.
2. For current measurements under 500 mA, connect the red test lead to the mA jack and the black test lead to the COM jack. For current measurements over 500 mA, connect the red test lead to the A jack and the black test lead to the COM jack.

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3. To measure AC (RMS) current with capacitive coupling, ensure that the Function Switch in the mADC or 10ADC position and press the yellow SEL/ON button once. The AC annunciator illuminates.
4. To measure AC+DC (TRMS) current with direct coupling, ensure that the Function Switch is in the mADC or 10ADC position, and press the yellow SEL/ON button a second time. The AC+DC annunciator illuminates.
5. Remove power from the circuit under test and open the normal circuit path where the measurement is to be taken. Connect the meter in series with the circuit.
6. Apply power and read the value from the display.

RESISTANCE MEASUREMENTS

WARNING

To ensure operator safety, never connect leads to a live circuit when taking resistance measurements.

1. To measure resistance, set the Function Switch to the Ω position
Connect the red test lead to the VΩ⁺ → jack and the black test lead to the COM jack.
3. Connect the test leads to points of measurement.
4. For highest accuracy when measuring low resistance, press the RANGE button to set the unit to the 500 range, short the test leads together, and press the REL button. This zeros the meter to compensate for the resistance of the test leads.

CONTINUITY MEASUREMENTS

WARNING

To ensure operator safety, never connect leads to a live circuit when taking resistance measurements.

1. To measure continuity, set the Function Switch to the Ω position, and then press the yellow SEL/ON button. The b annunciator illuminates.
Connect the red test lead to the VΩ⁺ → jack and the black test lead to the COM jack.
3. Connect the test leads to points of measurement. The buzzer sounds when the resistance is less than approximately 20 Ω.

DIODE TESTING

1. Set the Function Switch to the ⊣ (capacitance) position, and then press the yellow SEL/ON button. The → annunciator illuminates.
Connect the red test lead to the VΩ⁺ → jack and the black test lead to the COM jack. The red lead is (+) positive polarity.
3. To check forward voltage (V_f), connect the red lead to the anode and the black lead to the cathode. Diodes and semiconductor junctions with normal V_f of less than approximately 2 V can be checked.
4. The display indicates the forward voltage. Normal diode voltages are approximately 0.3–0.4 V for germanium diodes, 0.6–0.7 V for silicon diodes, and 1.6 V for light emitting diodes (LED). A shorted diode reads near 0 V. An open diode reads the same as with open leads.
5. Reverse the test lead connections to the diode. The reading should be the same as with open test leads. A lower reading indicates a leaky diode.

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CAPACITANCE MEASUREMENTS

WARNING

Discharge all capacitors before taking any measurements. Damage to the instrument and injury to the operator could occur. To ensure operator safety, never connect the leads to a live circuit.

1. Set the Function Switch to the -----------------------------------
Connect the red test lead to the VΩ⁺ → jack and the black test lead to the COM jack.
3. Connect the test leads to the capacitor. Observe polarity when measuring polarized capacitors, the red lead is (+) positive polarity.
Read the capacitance from the display. A shorted capacitor will indicate an overrange. An open capacitor will indicate near zero on all ranges.
5. For maximum accuracy, press the RANGE button to step to the desired range in MANUAL ranging, then press the REL button to zero the test lead capacitance before taking measurements. Always use the REL button for readings in the 50 nF range.

USEFUL CONVERSIONS
pF	nF	μF
1,000	1.0	0.001
10,000	10.0	0.01
100,000	100.0	0.1
1,000,000	1,000.0	1.0
	10,000.0	10.0
	100,000.0	100.0

pF = picofarads (10^-12)

nF = nanofarads (10^-9)

µF = microfarads (10^-6

FREQUENCY MEASUREMENTS

Frequency measurement may be made when taking voltage measurements for all multimeters, and for the 5390 and 5370, while taking current measurements as well.

NOTE

Connect the red test lead to the appropriate current input jack if the Function Switch is set to mADC or 10ADC on the models 5370 and 5390.

Connect the red test lead to the VΩ⁺ → jack and the black test lead to the COM jack.
2. Connect the test leads to points of measurement.
3. To measure frequency with models 5360 and 5380, follow the procedure for taking voltage measurements. While the voltage measurement

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is displayed, press the yellow SEL/ON button once. The frequency is then shown on the display.

4. To measure frequency with models 5370 and 5390, follow the procedure for taking voltage or current measurements. While the measurement is displayed, press the Hz button once. The frequency is then shown on the display.

SELECTING IMPEDANCE FOR dBm AND RESISTIVE POWER MEASUREMENTS (5370 and 5390 only)

The reference impedance for dBm and resistive power measurements is selectable from 1 Ω to 9999 Ω for models 5370 and 5390.

1. To select the reference impedance set the Function Switch to the VAC position, then long press the ZOOM button. The impedance reference is displayed.
2. Press the SEL/ON button once to select the digit to set.
3. Press the RANGE button to increment the selected digit.
4. Press the SEL/ON button again to select the next digit to set, and the RANGE button to increment digit.
5. When the reference impedance is set, short press the ZOOM button to return the unit to VAC mode.

dBm MEASUREMENTS (5370, 5380 and 5390 only)

NOTE

The reference impedance is fixed at 600 Ω for the 5380, and is adjustable for the 5370 and 5390. Refer to SELECTING IMPEDANCE to set the impedance for models 5370 and 5390.

1. To measure dB in the models 5370 and 5390, set the Function Switch to the VAC position, then press the SEL/ON button once. To measure dB in the model 5380, set the rotary Function Switch to the VAC position, and then press the yellow SEL/ON button twice.
Connect the red test lead to the VΩ⁺II → jack and the black test lead to the COM jack.
3. Connect the test leads to points of measurement.
4. Read dB measurement from the display.

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RESISTIVE POWER MEASUREMENT (5390 only)

NOTE

Refer to SELECTING IMPEDANCE to set the reference impedance before performing a resistive power measurement.

1. To measure resistive power in VA, set the Function Switch to the VDC position.
Connect the red test lead to the VΩ⁺ → jack and the black test lead to the COM jack.
3. Press the SEL/ON button twice to measure power.
4. Connect the test leads to the measurement points.

DUTY CYCLE MEASUREMENTS (5360, 5370 and 5390 only)

Duty cycle measurements can be taken while voltage measurements are taken for all meters, and while current measurements are taken using the 5390 and 5370.

To measure % positive duty cycle in the model 5360, set the Function Switch to the VAC position, and then press the yellow SEL/ON button twice. To measure % negative duty cycle, press the yellow SEL/ON button a third time. To measure % positive duty cycle in the models 5370 and 5390, set the rotary Function Switch to VAC, VDC, mVDC, mADC, or 10ADC, then press the Hz button twice. To measure % negative duty cycle, press the Hz button a third time.

To perform duty cycle measurements during current measurements (5370 and 5390 only), connect the red test lead to the appropriate current input jack and the black test lead to the COM jack,

to perform duty cycle measurements during voltage measurements, connect the red test lead to the VΩ⁺II → jack and the black test lead to the COM jack.

3. Connect the test leads to points of measurement.
4. Read % positive or % negative duty cycle from the display. The % annunciator and either the A or V annunciators indicate the polarity.

PULSE WIDTH MEASUREMENTS (5390 only)

Pulse width measurements can be taken while taking voltage or current measurements.

To measure positive width, set the rotary Function Switch to VAC, VDC, mVDC, mADC, or 10ADC, then short press the Hz button six times. To measure negative pulse width, short press the Hz button a seventh time.
2. To perform pulse width measurements during current measurements, connect the red test lead to the appropriate current input jack and the black test lead to the COM jack,

to perform pulse count measurements during voltage measurements, connect the red test lead to the VΩ⁺ → jack and the black test lead to the COM jack.

3. Connect the test leads to points of measurement.

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4. Read positive or negative pulse width from the display. The A or V annunciators of the LCD indicate the polarity.

PULSE COUNT MEASUREMENTS (5390 only)

Pulse count measurements can be taken while taking voltage or current measurements. This is a totalized pulse count from the time of activation until the time of reading.

To measure positive pulse count, set the Function switch to VAC, VDC, mVDC, mADC, or 10ADC, then short press the Hz button four times. To measure negative pulse count. Short press the Hz button a fifth time.
To perform pulse count measurements during current measurements, connect the red test lead to the appropriate current input jack and the black test lead to the COM jack,

or

to perform pulse count measurements during voltage measurements, connect the red test lead to the VΩ⁺II → jack and the black test lead to the COM jack.

3. Connect the test leads to points of measurement.
4. Read positive or negative pulse counts from the display. The A or V annunciators of the LCD indicate the polarity.

POWER DISTURBANCE INDICATION (5370 and 5390 only)

1. To measure the disturbances of the AC power lines, set the Function Switch to the VAC position. The LINE annunciator illuminates.
Connect the red test lead to the VΩ^*II → jack and the black test lead to the COM jack.

3. Connect the test leads to the AC power lines.
Press the SEL/ON button twice to detect a transient disturbance. Three bars of the bargraph directly beneath the ^J/_Y annunciator illuminate if the disturbance is greater than 80 V.
Press the SEL/ON button a third time to detect a high frequency (harmonic) disturbance. Three bars of the bargraph directly beneath the sannunciator illuminate if the disturbance is greater than 25 V.

TEMPERATURE MEASUREMENT (5370 only)

To measure temperature in degrees Celsius, set the Function Switch to the °C position. To measure temperature in degrees Fahrenheit, press the SEL/ON button.
Connect the temperature probe assembly to the VΩ⁺ → jack and the COM jack.
3. Connect the B+K Precision Model TP-5300 temperature probe to the test point.
4. Read the temperature from the display. The ° symbol illuminates and right most digit indicates C for Celsius measurement or F for Fahrenheit.

Page 21

MAINTENANCE

The multimeter requires no maintenance other than replacing blown fuses or weak or dead batteries. The multimeter monitors the condition of the two fuses and the battery.

The display shows FUSE 1 if fuse F1 (0.63 A) is blown. The display shows FUSE 2 if fuse F2 (10 A) is blown. If both fuses are blown, the display shows FUSES.

NOTE

Fuse F1 is tested only when the Function Switch is in the µA/mA position.

The display shows BAT when the battery is low. When the BAT annunciator first appears, the battery has approximately 10% (50 hours) of life remaining.

Use the following procedure to open the multimeter case and replace a blown fuse or the battery.

1. Pivot up the tilt stand and rotate it to remove it from the back of the multimeter.
2. Refer to Figure 13, and use one leg of the stand to pry the SECURX test lead retainer slightly away from the multimeter housing. Remove the SECURX.
3. Refer to Figure 14, and use the legs of the tilt stand to pry the cover of the multimeter loose. Pry one side off and then the other side. Remove the cover from the multimeter. Carefully remove the clear insulator.

Fig. 13 Removing the SECURX

4. Refer to Figure 15 to locate the fuses and the battery. Replace the blown fuse or battery.
5. Carefully replace the insulator, and snap the top cover in place.
6. Slide the SECURX in place.
7. Snap the tilt stand into the back of the multimeter.

Page 22

MAINTENANCE

Fig. 14 Opening the Case

INSTRUMENT REPAIR SERVICE

Because of the specialized skills and test equipment required for instrument repair and calibration, many customers prefer to rely upon B+K PRECISION for this service. We maintain a network of B+K PRECISION authorized service agencies for this purpose. To use this service, even if the instrument is no longer under warranty, follow the instructions given in the WARRANTY SERVICE INSTRUCTIONS portion of this manual. There is a nominal charge for instruments out of warranty.

Page 23

SPECIFICATIONS

NOTES

1. Unless otherwise stated, accuracy specifications apply from 18°C to 28°C
2. Accuracy Specifications stated as n%R+nD , means ±(n% of reading +n least significant digits).
3. Accuracy Specifications stated as n%FS , means ±(n% of Full Scale)

DC VOLTAGE (Auto/Manual Ranging)

DCV accuracy from 21°C to 25°C (5390 and 5380)

		Accu		Innut
Ranges	5390	5380	5370	5360	Resolution	Impedance
500 mV	0.025%R+2D	0.025%R+2D	0.05%R+2D	0.1%R+2D	10 µV	10 MΩ or 1 GΩ *
5 V	0.025%R+2D	0.025%R+2D	0.05%R+2D	0.1%R+2D	100 µV	11 MΩ
50 V	0.025%R+2D	0.025%R+2D	0.05%R+2D	0.1%R+2D	1 mV	10 MΩ
500 V	0.025%R+2D	0.025%R+2D	0.05%R+2D	0.2%R+2D	10 mV	10 MΩ
1000 V	0.025%R+2D	0.025%R+2D	0.05%R+2D	0.3%R+2D	100 mV	10 M Ω

* (10 MO only on 5360)

Normal Mode Rejection:

±1100 V DC+AC peak, beeper sounds if exceeded >60 dB, selectable 50 Hz and 60 Hz Common Mode Rejection: >120 dB, selectable 50 Hz and 60 Hz

AC VOLTAGE (Auto/Manual Ranging, True RMS)

Models 5390, 5380 and 5370

Accuracy at greater than 10% of range, 50,000 counts at Full Scale:

Ranges	DC to 1 kHz	1 kHz to 4 kHz	4 kHz to 10 kHz	10 kHz to 30 kHz	30 kHz to 50 kHz	Resolution	Input Impedance
500 mV	0.3%R+30D	1%R+30D	5%R+30D	Not s	pecified	10 μV	10 MΩ /100 pF or 1 GΩ
5 V	0.3%R+30D	1%R+30D	2%R+30D	2%R+30D	3%R+30D	100 µV	11 MΩ/100 pF
50 V	0.3%R+30D	1%R+30D	2%R+30D	2%R+30D	3%R+30D	1 mV	10 MΩ/100 pF
500 V	0.3%R+30D	1%R+30D	2%R+30D	2%R∔30D	3%R+30D	10 mV	10 MΩ/100 pF
750 V	0.3%R+30D		Not s	pecified		100 mV	10 MΩ /100 pF

50 kHz to 100 kHz (5 V 50 V 500 V ranges): +6% ES typical

Crest Factor:	6
Accuracy Factor:	0.2% for crest factor of 2 to 3
-	0.5% for crest factor of 3 to 6
Overvoltage Protection:	±1100V DC+AC peak, beeper sounds if exceeded
Transient Protection:	6 kV for 10 μs
Common Mode Rejection:	>80 dB, selectable 50 Hz or 60 Hz

Page 24

Model 5360

Accuracy at greater than 10% of range, 5,000 counts at Full Scale:

Ranges	DC to 1 kHz	1 kHz to 5 kHz	5 kHz to 10 kHz	10 kHz to 20 kHz	20 kHz to 30 kHz	Resolution	Input Impedance
500 mV	1%R+3D	4%R+3D		Not specifie	d	100 μV	10 MΩ /100 pF
5 V	1%R+3D	1%R+3D	2%R+3D	2%R+3D	3%R+3D	1 mV	11 M Ω/100 pF
50 V	1%R+3D	1%R+3D	2%R+3D	2%R+3D	3%R+3D	10 mV	10 MΩ/100 pF
500 V	1%R+3D	1%R+3D	2%R+3D	2%R+3D	3%R+3D	100 mV	10 MΩ/100 pF
750 V	1%R+3D		Not s	pecified		1 V	10 MΩ/100 pF

Crest Factor:

racy Factor:	1.0% for crest factor of 1.5 to 2 4.0% for crest factor of 2 to 3.
voltage Protection:	±1100 V DC+AC peak, beeper sounds if exceeded
ient Protection:	6 kV for 10 μs
non Mode Rejection:	80 dB, selectable 50 Hz or 60 Hz

DC CURRENT (Auto/Manual Ranging)

	Accur	acy		Max Burden
Ranges	5390, 5380, 5370	5360	Resolution	Voltage
500 µA	0.2%R+5D	Not Available	10 nA	700 mV
5 mA	0.2%R+2D	0.2%R+2D	100 nA	700 mV
50 mA	0.05%R+2D	0.2%R+2D	1 μA	700 mV
500 mA	0.2%R+2D	0.2%R+2D	10 µA	1.5 V
10 A	0.5%R+2D	0.5%R+2D	1 mA	500 mV

erload Protection: 630 mA, 600 V fuse for mA ranges, interrupts 1500 A 10 A, 600 V fuse for 10 A range, interrupts 50,000 A Display indicates blown fuse F1, F2 or FUSES

AC CURRENT (Auto/Manual Ranging, True RMS)

Models 5390, 5380, and 5370.

Accuracy at greater than 10% of range, 50,000 counts at Full Scale

Ranges	DC to 1 kHz	1 kHz to 10 kHz	10 kHz to 20 kHz	20 kHz to 30 kHz	Resolution	Max Burden Voltage
500 µA	0.75%R+50D	0.75%R+50D	1.0%R+50D	3.0%R+50D	10 nA	700 mV
5 mA	0.6%R+50D	0.6%R+50D	1.0%R+50D	2.0%R+50D	100 nA	700 mV
50 mA	0.6%R+50D	0.6%R+50D	1.0%R+50D	2.0%R+50D	1 µA	700 mV
500 mA	0.7%R+50D	0.7%R+50D	Not s	pecified	10 µA	1.5 V
10 A	1% of FS		Not specified		1 mA	500 mV

Crest Factor:

Accuracy Factor: 0.2% for crest fact

0.5% for crest factor of 3 to

Overload Protection: 630 mA, 600 V fuse for mA ranges, interrupts 1500 A 10 A, 600 V fuse for 10 A range, interrupts 50,000 A Display indicates blown fuse F1, F2, or FUSES

Model 5360. Accuracy at greater than 10% of range, 5,000 counts at Full Scale

Ranges	DC to 5 kHz	Resolution	Max Burden Voltage
5 mA	1.0%R+3D	1 μA	700 mV
50 mA	1.0%R+3D	10 µA	700 mV
500 mA	1.0%R+3D	100 µA	1.5 V
10 A	1% of FS	10 mA	500 mV

rest Factor:

Factor: 1.0% for crest factor of 1.5 to 2 4.0% for crest factor of 2 to 3

Overload Protection: 630 mA, 600 V fuse for mA ranges, interrupts 1500 A 10 A, 600 V fuse for 10 A range, interrupts 50,000 A Display indicates blown fuse F1, F2, or FUSES

Page 25

RESISTANCE (AUTO/MANUAL RANGING)

Ranges	Accuracy 5390, 5380, 5370	Accuracy 5360	Resolution	Test Current
500 Ω	0.07%R+5D	0.1%R+5D	10 mΩ	1 mA
5kΩ	0.07%R+2D	0.1%R+2D	100 mΩ	100 µA
50 k Ω	0.07%R+2D	0.1%R+2D	1Ω	10 µA
500 k Ω	0.07%R+2D	0.1%R+2D	10 Ω	1 µA
5 MΩ	0.3%R+2D	0.3%R+2D	100 Ω	100 nA
50 MΩ	1.0%R+2D	1.0%R+2D	1 kΩ	10 nA

Max Open Circuit Voltage: Overload Protection:

600V DC+AC peak

CONTINUITY

Threshold:10 Ω to 20 ΩResponse Time:1 msOverload Protection:600 V DC+AC peak

DIODE TEST

Measures forward voltage drop of diode 0 to 1.999V Test current: 1 mA ±20% Overload Protection: 600V DC+AC peak

CAPACITANCE (Auto/Manual Ranging)

Accuracy, 5,000 counts at Full Scale:

	Accuracy				Max
Ranges	5390,5380,5370 5360		Resolution	Measurement Current	Measurement Time
50 nF	1.0%R+2D	1.0%R+2D	10 pF	100 nA	0.5 sec.
500 nF	1.0%R+2D	1.0%R+2D	100 pF	1 μA	0.5 sec.
5 µF	1.0%R+2D	1.0%R+2D	1 nF	10 µA	0.5 sec.
50 µF	1.0%R+2D	1.0%R+2D	10 nF	100 µA	0.5 sec.
500 µF	1.0%R+2D	1.0%R+2D	100 nF	1 mA	1.5 sec.
5000 µF	1.0%R+2D	2.0%R+2D	1 µF	1 mA	3 sec./ mF
50 mF	1.0%R+2D	2.0%R+2D	10 µF	1 mA	3 sec./ mF

Overload Protec

tion:

600V DC+AC peak

FREQUENCY (Autoranging)

equency	Range:
curacy:
A.

0.6 Hz to 500 kHz ±(0.03% rdg + 1 dgt)

nsitivity:

Range	500 mV (5390, 5370)	5 V to 500 V 500 µA to 500 mA	750 V	10 A (5390, 5370)
0.6 Hz to 5 kHz	2% of FS	2% of FS	100 V	2 A
5 kHz to 50 kHz	5% of FS	5% of FS	250 V
50 kHz to 500 kHz	Not Specified	10% of FS	Not	Specified

Page 26

SPECIFICATIONS

PEAK HOLD

Selection:Peak + or Peak - (surge or sag)Acquisition Time:<1 ms</td>Applicable Modes:VDC, mVDC, mADC, 10ADCAccuracy:For pulse >1ms, (1% reading + 50 digits)

dB MEASUREMENT (5390 and 5370)

Measures value relative to a reference from 1 to 9999 Ω. Factory preset for reference is 600 Ω. Refer to dBm measurement procedure to set impedance. Accuracy in dB: 0.09 x VAC accuracy in percent

Measurement range: 10 mVAC to 750 VAC

dB MEASUREMENT (5380)

Converts VAC to dBm across 600 ohms, 0 dBm = 0.7746 mVAC Accuracy in dB: 0.09 x VAC accuracy in percent Resolution: ±0.01 dB Measurement range: 10 mVAC to 750 VAC

DUTY CYCLE (5390, 5370, 5360)

Modes:	Selectable %+, %-
Resolution:	0.01%
Minimum pulse width:	2 μs
Maximum pulse period:	0.8 s
Minimum pulse period:	100 µs
Accuracy:	Same as FREQUENCY mode

EVENT COUNTER (5390)

Range:	0 to 99999 (totalize)
Minimum pulse duration:	2 μs
Reset:	Relative key
Sensitivity:	3% of range (excludes 750 V, 10 A ranges)

PULSE WIDTH (5390)

Modes:	Selectable + or
Resolution:	10 µs
Minimum pulse width:	20 µs
Maximum pulse period:	12.5 s
Accuracy:	±(0.01% + 10 μs)
Sensitivity:	3% of range (excludes 750 V, 10 A ranges)

POWER DISTURBANCE INDICATOR (5390, 5370)

Display indicates Power Disturbance for transient voltage >80V, or high frequency (1 kHz to 100 kHz) Harmonic Disturbance >25 V

TEMPERATURE (5370)

Using Model TP-5300 Pl	atinum Temperature Probe
Temperature Range:	-200°C to +800°C
Resolution:	0.1°C
Accuracy:	-125 C to +75 C:	0.5%
Display:	°C or °F, selectable	1.00

COMPUTER INTERFACE

RS-232 capability built-in Requires AK-5300 or AK-5350 hardware/software kit for interconnection to computer or printer.

Page 27

GENERAL SPECIFI	CATIONS	Auto Power Off Override:	Does not shut off with live circuit, RS-232 active or
Display:	50,000 count LCD, 14-mm digit height, 34-segment analog bargraph (with backlight for models 5390, 5380, and 5370). Annunciators for function and unit of	Dimensions (HxWxD):	Peak Hold 1-5/8" x 3-1/4" x 7-1/2" (40 mm x 82 mm x 189 mm)
	measurement.	Weight:	14 oz.
Measurement Rate: Environmental:	2 per second, 20 per second for bargraph.	Safety:	IEC1010-1 class 2, 600V cat III, 1000V cat II Live circuit indication above 24 V
Operation: 0° to 50°C 0 to 80% RH to 40°C			6 kV transient protection 600 V high energy fuses on all current ranges
Limited Operation:	0 to 70% RH to 50°C −10°C to +60°C, <80% RH	Ruggedness: Shock & Vibration:	Sealed, watertight case, 1P677 MIL-T-28800
Storage:	-40°C to + 70°C without battery	Case Material:	Flame retardant, self extinguishing
Power Requirement:	9V battery	EMC:	Emission EN55011, class B, susceptibility
Battery Life:	500 hours		IEC801-4, level 3, radiation IEC 801-3 (10V/M) level
Low Battery Indication:	BAT displayed	Calibration:	One year, recalibration by serial interface without
Auto Power Off:	30 minutes		opening case

Page 28

ACCESSORIES

ACCESSORIES SUPPLIED

Battery, Test Leads, Instruction Manual

OPTIONAL ACCESSORIES

The following accessories are available for each of the multimeters:

The models 5390, 5380, 5370, and 5360 have built-in RS-232 capability. However, special hardware is required to complete the interconnection to a computer. The models AK-5300 and AK-5350 include the special hardware required.

Model AK-5300 Calibration Hardware and Software Kit

This kit contains the hardware and software needed to recalibrate and to document the calibration of your multimeter.

Model AK-5350 Data Acquisition Hardware and Software Kit

This kit contains the hardware and software needed to download data from your multimeter to your PC, and to control the multimeter from the PC.

Model AK-5301 Calibration Software

This accessory adds calibration capability to the Model AK-5350 Data Acquisition Hardware and Software Kit.

Model AK-5351 Data Acquisition Software

This accessory adds data acquisition capability to the Model AK-5300 Calibration Hardware and Software Kit.

LC-5300 Carrying Case

Provides a convenient and safe means for storing and transporting the multimeters.

TP-5300 Temperature Probe

Platinum temperature probe designed for use with Model 5370 Multimeter.

Replacement Test Leads

Replacement test leads must have a shoulder for the SECURX test lead retainer to work properly. B+K Precision Models TL-100, TL-110 and TL-120 test leads have the necessary shoulders to actuate this important safety feature.

Test Lead Tips

B+K Precision offers a wide variety of test lead tips to make appropriate connections in most applications. Such tips include alligator clips, spring hooks, spade lugs, surface mount device tips, etc.

BK Precision 5390, 5380, 5370, 5360 User manual

Instruction Manual for Models 5360 5370 5380

Premium Handheld DIGITAL MULTIMETERS

TABLE OF CONTENTS

FEATURES

Features of the 5390 include:

FEATURES

CONTROLS AND INDICATORS

NOTE

CONTROLS AND INDICATORS

CONTROLS AND INDICATORS

CONTROLS AND INDICATORS

LCD INDICATORS

Fig. 12 LCD Display

ECAUTION 3

NOTE

POWER ON / OFF

NOTES

PROGRAMMABLE POWERUP OPTIONS

NOTE

4. RS232 operation.

FUNCTION SELECTION

RANGE SELECTION

ANALOG BARGRAPH, ZOOM

BACKLIGHT (5370, 5380 and 5390 only)

HOLD & AUTO MEM MODE (AUTOSTORE)

RELATIVE MEASUREMENTS

PEAK HOLD MEASUREMENTS

SURV or MIN / MAX / AVG MODE (5370 and 5390 only)

VOLTAGE MEASUREMENTS (AC, DC, AC+DC)

NOTE

CURRENT MEASUREMENTS (AC, DC, AC+DC)

CAUTION

RESISTANCE MEASUREMENTS

WARNING

CONTINUITY MEASUREMENTS

WARNING

DIODE TESTING

CAPACITANCE MEASUREMENTS

WARNING

FREQUENCY MEASUREMENTS

NOTE

SELECTING IMPEDANCE FOR dBm AND RESISTIVE POWER MEASUREMENTS (5370 and 5390 only)

dBm MEASUREMENTS (5370, 5380 and 5390 only)

NOTE

RESISTIVE POWER MEASUREMENT (5390 only)

NOTE

DUTY CYCLE MEASUREMENTS (5360, 5370 and 5390 only)

PULSE WIDTH MEASUREMENTS (5390 only)

PULSE COUNT MEASUREMENTS (5390 only)

or

POWER DISTURBANCE INDICATION (5370 and 5390 only)

TEMPERATURE MEASUREMENT (5370 only)

MAINTENANCE

NOTE

Fig. 13 Removing the SECURX

MAINTENANCE

INSTRUMENT REPAIR SERVICE

SPECIFICATIONS

NOTES

DC VOLTAGE (Auto/Manual Ranging)

AC VOLTAGE (Auto/Manual Ranging, True RMS)

Models 5390, 5380 and 5370

50 kHz to 100 kHz (5 V 50 V 500 V ranges): +6% ES typical

Model 5360

DC CURRENT (Auto/Manual Ranging)

AC CURRENT (Auto/Manual Ranging, True RMS)

RESISTANCE (AUTO/MANUAL RANGING)

CONTINUITY

DIODE TEST

CAPACITANCE (Auto/Manual Ranging)

FREQUENCY (Autoranging)

SPECIFICATIONS

PEAK HOLD

dB MEASUREMENT (5390 and 5370)

dB MEASUREMENT (5380)

DUTY CYCLE (5390, 5370, 5360)

EVENT COUNTER (5390)

PULSE WIDTH (5390)

POWER DISTURBANCE INDICATOR (5390, 5370)