IET Labs 1565-E Guía de solución de problemas

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REPRODUCTION AND DISTRIBUTION OF THIS TECHNICAL MANUAL

IS AUTHORIZED FOR U.S. GOVERNMENT PURPOSES

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We warrant that this product is free from defects in material and workmanship and, when properly used,

will perform in accordance with applicable IET speciﬁ cations. If within one year after original shipment,

it is found not to meet this standard, it will be repaired or, at the option of IET, replaced at no charge when

returned to IET. Changes in this product not approved by IET or application of voltages or currents greater

than those allowed by the speciﬁ cations shall void this warranty. IET shall not be liable for any indirect,

special, or consequential damages, even if notice has been given to the possibility of such damages.

THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED,

INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR

FITNESS FOR ANY PARTICULAR PURPOSE.

OBSERVE ALL SAFETY RULES

WHEN WORKING WITH HIGH VOLTAGES OR LINE VOLTAGES.

Dangerous voltages may be present inside this instrument. Do not open the case

Refer servicing to qualiﬁ ed personnel

HIGH VOLTAGES MAY BE PRESENT AT THE TERMINALS OF THIS INSTRUMENT

WHENEVER HAZARDOUS VOLTAGES (> 45 V) ARE USED, TAKE ALL MEASURES TO

AVOID ACCIDENTAL CONTACT WITH ANY LIVE COMPONENTS.

USE MAXIMUM INSULATION AND MINIMIZE THE USE OF BARE

CONDUCTORS WHEN USING THIS INSTRUMENT.

Use extreme caution when working with bare conductors or bus bars.

WHEN WORKING WITH HIGH VOLTAGES, POST WARNING SIGNS AND

KEEP UNREQUIRED PERSONNEL SAFELY AWAY.

DO NOT APPLY ANY VOLTAGES OR CURRENTS TO THE TERMINALS OF THIS

INSTRUMENT IN EXCESS OF THE MAXIMUM LIMITS INDICATED ON

THE FRONT PANEL OR THE OPERATING GUIDE LABEL.

2.1 Model Conﬁ guration and Speciﬁ cations ........................................................................3

2.2 General Speciﬁ cations ...................................................................................................4

3.1 Initial inspection and setup ............................................................................................7

3.2 Connection .....................................................................................................................7

3.2.1 General Considerations ........................................................................................7

3.2.2 Electrical Considerations ......................................................................................7

3.2.3 Four-Wire Kelvin Lead Connections ...................................................................7

3.2.4 Thermal emf Considerations ................................................................................7

3.3 Dial Setting ....................................................................................................................8

3.4 Environmental Conditions .............................................................................................8

3.5 Local Operation .............................................................................................................8

3.6 Remote Operation ..........................................................................................................8

8.1 Veriﬁ cation of Performance

8.2 Calibration Interval

1.1 Introduction

The 1565-E is a Type 2, general purpose SLM

with corresponding to ANSI S1.4-1983 Type 2

and IEC61672-1:2013 Class 2

The chief use of the SLM is making noise

measurements in a work place such as: routine

measurements of ofﬁ ce building HVAC sys-

tems, machinery, trafﬁ c noise, and other noises

of a reasonably constant character.

1.2 Description

The instrument is housed in a high impact

molded plastic case that is shaped for comfort-

able hand-held operation and tapered at the

microphone end to minimize the effect of case

diffraction.

It consists of the following elements: a mi-

crophone to pickup sound; an ampliﬁ er, to

raise the microphone output to useful levels; a

calibrated attenuator, to adjust the ampliﬁ ca-

tion to a value appropriate to the sound level

being measured; a display, networks, to adjust

the frequency characteristic of the response (A

or C weighting) ; and an output connection, to

accommodate additional measuring equipment.

It covers the sound-level range from 35 to 130

dB in 2 overlapping ranges.

Figure 1 1565-E Sound Level Meter

For convenience to the user, the pertinent

speciﬁ cations are given in an OPERATING

GUIDE, shown typically in Figure 2.1, afﬁ xed

to the case of the instrument.

2.1 Speciﬁ cations

Sound level range: 35 to 130 dB re 20 µN/m2

Sound level accuracy: ±1.5 dB

Frequency range: 31.5 Hz to 8 kHz

Weighting: A and C

Output: 3.5 mm mini-jack

ac Output: >0.65 Vrms behind 600 Ω at full

scale; will drive oscilloscope or low-imped-

ance headphones

dc Output: 10 mV/dB

Display: 3-1/2 digit LCD display, full scale

sound-level range set by Range select switch,

greater than 10 dB portion of scale for sound-

level comparisons on 2 ranges, and low end of

sound-level range set by range select switch.

Power: One 9V (6F22 or equivenent) alkaline

battery supplied, provides 50+ hours of opera-

tion

Environmental:

Temperature: 0 to 50°C operating

-40 to +60°C storage, with batteries removed

Humidity: <95% RH non-condensing

Weight: 0.21 kg (7 oz) net, 1.4 kg (3 lb) ship-

ping

Dimensions: 24 cm H x 6.8 cm W x 2.5 cm D

(9.45” x 2” x 1”)

Accessories supplied: Instruction manual,

windscreen, adjustment screwdriver and carry-

ing case

Additional Speciﬁ cations

Standard: Conforms to ANSI S1.4-1983 Type

2 and IEC61672-1:2013 Class 2

Dynamic range: 55 dB with 2 ranges Lo and

Ranges: Lo: 35 - 90 dB and Hi: 75 - 130 dB

Time weighting: rms response with fast 125

mS and slow 1 s

Microphone: 1/2” electret condenser micro-

phone

Resolution: 0.1 dB

Calibration: Internal oscillator at 1 kHz and

94 dB

Recommended calibration interval: 12

months

FIGURE 2.1 Typical OPERATING GUIDE Afﬁ xed to Unit

(Please see label afﬁ xed to your unit)

3.1 Initial inspection and setup

This instrument was tested and carefully in-

spected before shipment. It should be in proper

electrical and mechanical order upon receipt.

An OPERATING GUIDE is attached to the

case of the instrument to provide ready refer-

ence to speciﬁ cations.

Precautions:

• Care should be taken to keep the SLM and

microhone clean and dry

• Do not store in areas of high humidity for

extended periods

• Avoid subjecting the SLM to excessive

vibration

• Remove batteries when stored for long

periods of time

3.1.2

Accessories Included

1. 1565-E Sound Level Meter Instruction

Manual

2.) Carry case for SLM and accessories

1565-E-CASE

3.) Windscreen 1565-E-WS

4.) Adjustment screwdriver 1565-0440-01

5.) 9 V battery 6F22

6.) Phone plug for ac/dc output 1565-E-PP

3.1.3 Key Features

1. 1/2” Electret Microphone

2. LCD display

3. POWER OFF & RANGE select switch

4. RESPONSE & HOLD select switch

5. A/C weighting and Calibration switch

6. Calibration adjust screw for 94dB

7. Reset key (resets max hold reading)

8. AC/DC analog output 3.5mm phone jack

9. Battery compartment on rear of meter

Note: The threaded tripod mount screw hole is

on the center rear of the meter (not shown).

Figure 3-1 Key Features

3.1.4

Condensed Operating Instructions

1. Power the meter by moving the RANGE

switch to the LO or HI range position, the me-

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