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3 

OVERVIEW OF UNIT

 

 

 

 

 

 

 

 

              

 

 

 

 

 

OPERATION OF UNIT

 

Meter mode scales in 

dB relative to 0.4A/m 

Field 

strength 

Background 

noise 

 

 

 

 

 

 

 

 

 

 

 

>+8 

 

>-12 

 

 

 

 

 

 

 

6 

 

-14 

 

 

5 

 

-15 

 

 

4 

 

-16 

 

 

3 

 

-17 

 

 

2 

 

-18 

 

 

1 

 

-19 

 

 

0 

 

-20 

 

 

-1 

 

-21 

 

 

-2 

 

-22 

 

 

-3 

 

-23 

 

 

-5 

 

-25 

 

 

-7 

 

-27 

 

 

-9 

 

-29 

 

 

-12 

 

-32 

 

 

-17 

 

-37 

 

 

-22 

 

-42 

 

 

 

 

 

Frequency 

response 

Absolute level is 

not important, 

only relative 

levels between 

frequency bands 

 

Meter Mode Scales -  
See table on right for details 

Overload 

indication 

Pick-up 

coil 

Frequency 

Band 

Switch 

Meter 

Mode 

Switch 

Power 

Switch 

Power 

LED 

O / I 

Headphone 

socket 

Volume 

control 

Содержание FSM

Страница 1: ...o the risk of electric shock SAFETY 1 It is important to read these instructions and to follow them 2 Keep this instruction manual in an accessible place 3 Clean only with a dry cloth Cleaning fluids...

Страница 2: ...tive testing of the system A test CD with 3 signals is provided for use with the meter These are pink noise 1kHz sine and a combination signal which is made up of the other two Details of use are give...

Страница 3: ...18 1 19 0 20 1 21 2 22 3 23 5 25 7 27 9 29 12 32 17 37 22 42 Frequency response Absolute level is not important only relative levels between frequency bands Meter Mode Scales See table on right for d...

Страница 4: ...Meter Mode Reference Filtering Signal Frequency response Compare levels between bands 1 3 Octave bands of 100Hz 1kHz 5kHz Pink noise Field strength 0dB or 400mA m Flat 50Hz to 8kHz Any Background noi...

Страница 5: ...ost induction loop systems Please contact Ampetronic or consult www ampetronic com for details Input type Connector pins wiring Connection requirements Electrect microphone i p 2 pole jack Tip Hot Lef...

Страница 6: ...ironments where the user may be laying down the horizontal field strength may also need to be considered All subsequent measurements using the FSM must take this into account The coil position inside...

Страница 7: ...sport services Evaluate these levels against the following recommendations o Below 42dB off scale is excellent performance for any installation o Report levels greater than 32dB Above this level the i...

Страница 8: ...hearing aid telecoil usually vertical Take and note a series of readings at each defined measurement point A F marking the positions and measured levels on a copy of the certificate initial values Adj...

Страница 9: ...e within 3dB of the reading at 1kHz o If required adjust the tone or Metal Loss Compensation MLC of the amplifier to boost high frequencies and achieve 3dB across the three frequency bands When all po...

Страница 10: ...ods o This test can also be performed using the Pink noise signal CD track 2 With this signal the peak readings must be between 9dB and 3dB with at least one point in the volume reading 6dB Note This...

Страница 11: ...factors Switch on loop system and using the combination signal CD track 1 take a reading at each of the overspill measurement points G K Ensure areas in which spill needs to be controlled read less t...

Страница 12: ...ly vertical Record levels at each measurement point The reading is the maximum LED illuminated over a 60 second period Readings should be between 9dB and 0dB throughout the volume depending on program...

Страница 13: ...nate this LED it should be seen as an overload condition Main LED meter is not illuminated Switch the unit OFF and ON again On power up the meter should briefly light a few LEDs If there is no audio f...

Страница 14: ...y from loop cables If in doubt contact Ampetronic for advice TECHNICAL SPECIFICATIONS POWER Internal batteries Range of operation Power Battery Life 2 x AA LR6 AM 3 1 8V to 3 2V overall DC 0 15W Up to...

Страница 15: ...this handbook are not followed correctly or if the unit is misused in any way The FSM is calibrated during manufacturing test and is valid until one year from the date the equipment leaves Ampetronic...

Страница 16: ...TION 30 mins Pink noise with 1s bursts of 1kHz Sine Track 2 PINK NOISE 30 mins Bandlimited as per IEC60118 4 Track 3 1kHz SINE 1 min Contact information Website www ampetronic com Technical support am...

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