TENMARS TM-195 RF Measurement Troubleshooting Guide Malaysia

TENMARS TM-195 RF Measurement Troubleshooting Guide Malaysia

The TENMARS TM-195 3-Axis RF Field Strength Meter is designed for broadband RF electromagnetic field measurements from 50 MHz to 3.5 GHz.

When using an RF meter, users sometimes experience situations such as:

No obvious reading

Reading seems too low

Reading seems too high

Reading keeps changing

Different readings at different locations

Different results when repeating the test

Alarm activates unexpectedly

Measurement does not match expectations

These situations do not automatically mean that the meter is faulty.

RF measurement depends on the source, frequency, distance, environment and measurement method.

This troubleshooting guide explains what to check before sending the instrument for service.

Problem 1 - TM-195 Shows Very Low Reading

If the reading appears lower than expected, first check the RF source.

Ask:

Is the RF equipment operating?

Is it transmitting continuously?

What frequency does it use?

How far is the meter from the source?

A low reading may simply mean that the RF field at the measurement location is low.

Do not assume that every RF source must produce a high reading.

Check the Frequency First

This is one of the most important troubleshooting steps.

The TM-195 is designed for:

50 MHz to 3.5 GHz

If the RF source is outside this frequency range, the TM-195 should not be expected to provide the required measurement.

For example:

5 GHz Wi-Fi is outside the specified TM-195 frequency range.

If a customer tries to use the TM-195 specifically for 5 GHz Wi-Fi and receives an unexpected result, the first issue is instrument selection rather than instrument failure.

Problem 2 - No Obvious Change Near the RF Source

If moving closer to the suspected source does not produce the expected change, check:

Source operating frequency

Whether the source is actually transmitting

Transmission activity

Measurement unit

Measurement position

Nearby RF sources

Distance

Whether the application is suitable for TM-195

Do not assume the equipment is transmitting continuously.

Some wireless systems change their transmission activity according to communication demand.

Problem 3 - Reading Keeps Changing

Fluctuating readings are common in RF measurements.

Possible causes include:

Changing transmitter activity

Wireless data traffic

Multiple RF sources

People moving nearby

Reflections

Antenna direction

Equipment operation

Small changes in meter position

A changing reading does not automatically indicate a faulty meter.

Try using MAX and AVG to better understand the measurement over an observation period.

Problem 4 - Reading Changes When I Move the Meter

This is also normal in many RF environments.

RF fields can change significantly with location.

Moving the meter may change:

Distance from source

Field direction

Reflected signal pattern

Relationship to nearby structures

Contribution from multiple RF sources

For comparative measurements, define specific measurement points rather than continuously moving the meter.

Problem 5 - Reading Changes When I Rotate the Meter

RF electromagnetic fields have direction.

The TM-195 uses a 3-axis measurement system, which reduces the need for repeated manual orientation compared with a single-axis measurement approach.

However, the surrounding RF environment can still change with meter position and handling.

Keep your measurement technique as consistent as possible.

Problem 6 - Reading Is Much Higher in One Location

A higher reading at one point does not automatically mean there is a meter problem.

Check whether the location is:

Closer to the RF source

In front of an antenna

Near wireless equipment

Near another RF transmitter

Affected by reflections

Surrounded by metal structures

Repeat the measurement at the same point.

Then compare nearby locations.

If the higher reading is repeatable, it may reflect the actual RF environment.

Problem 7 - Reading Seems Too High

If the reading appears unexpectedly high:

Step 1 - Check the measurement unit

Step 2 - Repeat the measurement

Step 3 - Move to a reference location

Step 4 - Identify nearby RF sources

Step 5 - Check the measurement distance

Step 6 - Record MAX and AVG if required

Step 7 - Confirm that the application is within the instrument frequency range

Do not immediately conclude that the environment is unsafe.

A measurement must be interpreted in context.

Problem 8 - Different Measurement Units Show Different Numbers

This is normal.

The TM-195 can express RF measurements using different measurement quantities and units.

Changing the unit can change the displayed numerical value.

This does not necessarily mean the actual RF field changed.

When comparing measurements:

Use the same unit throughout the survey.

Always record the measurement unit together with the value.

Problem 9 - Alarm Keeps Activating

First check the selected alarm threshold.

Ask:

What threshold has been set?

What measurement unit is being used?

Why was that threshold selected?

If the alarm threshold is set close to the normal RF level in the environment, the alarm may activate frequently.

The alarm simply indicates that the selected threshold has been reached.

It does not automatically mean that a safety limit has been exceeded.

Problem 10 - Alarm Does Not Activate

If you expect the alarm to activate but it does not, check:

Alarm setting

Threshold value

Measurement unit

Current RF level

Instrument mode

RF source frequency

Whether the source is transmitting

The measured field must reach the selected threshold for the alarm function to be relevant.

Problem 11 - TM-195 Does Not Identify the Wi-Fi Network

This is not a fault.

The TM-195 is not a Wi-Fi network analyser.

It does not identify:

SSID

Wi-Fi password

Wi-Fi channel

Individual access point

Network speed

Internet performance

The TM-195 measures broadband RF field strength.

For Wi-Fi network information, use appropriate network analysis equipment or software.

Problem 12 - TM-195 Does Not Show the Exact RF Frequency

This is also not a fault.

The TM-195 is a broadband RF field strength meter.

It measures RF fields within its supported frequency range but does not function as a spectrum analyser.

If you need to identify:

Exact frequency

Individual RF signal

Specific transmitter

Detailed RF spectrum

a spectrum analyser or other frequency-selective instrument may be required.

Problem 13 - Customer Wants to Measure 5 GHz Wi-Fi

The TM-195 has an upper specified frequency of:

3.5 GHz

Therefore, 5 GHz Wi-Fi is outside the specified measurement range.

This is an application mismatch.

Select an RF meter with suitable higher-frequency coverage.

Problem 14 - Customer Wants to Measure a Transformer

This is another possible application mismatch.

The TM-195 is designed for RF electromagnetic field measurement.

Transformers and power-related electrical equipment normally involve low-frequency electromagnetic field measurement.

A suitable low-frequency electric or magnetic field meter should be considered instead.

Do not use the term "EMF meter" alone when selecting equipment.

Identify the source and frequency.

Problem 15 - Customer Wants to Measure a Power Cable

The same principle applies.

Power cable electromagnetic field measurement is different from RF communication field measurement.

The TM-195 is not automatically suitable simply because both applications involve electromagnetic fields.

Use an instrument designed for the required low-frequency measurement.

Problem 16 - Different Users Get Different Results

Check whether both users are following the same procedure.

Differences can occur because of:

Measurement height

Distance

Observation time

Measurement unit

Meter position

User body position

Equipment operating condition

Different measurement locations

Create a standard procedure before comparing results.

Problem 17 - Results Are Different on Different Days

RF environments can change over time.

Possible reasons include:

Different network activity

Equipment operating conditions

Different transmitter activity

Building occupancy

Additional RF equipment

Different measurement time

Different measurement position

For trend comparison, try to repeat the test under similar conditions.

Record the date, time and operating condition.

Problem 18 - Reading Changes When Someone Walks Nearby

People can influence the RF measurement environment.

The human body can interact with RF propagation.

If you are performing a controlled comparison:

Keep unnecessary people away from the measurement point

Keep the operator position consistent

Avoid unnecessary movement

Repeat the measurement if someone passes close to the meter

This improves repeatability.

Problem 19 - TM-195 Reading Does Not Match Another Meter

Before deciding that one instrument is wrong, compare:

Frequency range

Sensor type

Measurement quantity

Measurement unit

Calibration status

Measurement position

Observation period

Instrument specifications

Measurement method

Two different RF meters may not produce directly comparable results if their specifications and measurement methods are different.

Problem 20 - Can I Confirm Safety from One Reading?

A single spot reading should not automatically be used to declare an environment safe or unsafe.

Formal RF exposure assessment may require consideration of:

Frequency

Applicable guideline

Exposure category

Averaging period

Instrument specifications

Calibration

Measurement procedure

Reporting method

The TM-195 can provide useful RF measurement information, but interpretation depends on the purpose of the test.

Quick TM-195 Troubleshooting Checklist

Before requesting repair or service, check:

1. Is the battery condition normal?

2. Is the RF source operating?

3. What frequency is being measured?

4. Is the frequency within 50 MHz to 3.5 GHz?

5. What measurement unit is selected?

6. What is the distance from the source?

7. Does the reading change at another location?

8. Have you repeated the measurement?

9. Have you tried MAX or AVG?

10. Are there other RF sources nearby?

11. Is the application actually RF measurement?

12. Are you expecting functions that require a spectrum analyser or Wi-Fi analyser?

This checklist can resolve many apparent measurement problems.

When Should the Meter Be Checked?

If the instrument continues to produce unusual results after:

Confirming the correct application

Confirming the frequency

Checking the measurement procedure

Checking the settings

Repeating the test under controlled conditions

then further instrument inspection may be appropriate.

Provide as much information as possible when requesting technical assistance.

Information to Send MTM Precision

If you need help troubleshooting a TENMARS TM-195, send:

Instrument model: TENMARS TM-195

Equipment being measured:

Equipment frequency:

Measurement unit:

Approximate distance:

Displayed reading:

MAX reading:

AVG reading if available:

What problem are you experiencing?

Photos or a short video of the measurement setup can also help explain the application.

This allows the technical team to distinguish between:

Application issue

Measurement method issue

Setting issue

and

Possible instrument issue

before unnecessary repair work is arranged.

TENMARS TM-195 Technical Support Malaysia

The TENMARS TM-195 is a 3-axis broadband RF field strength meter covering 50 MHz to 3.5 GHz.

Many apparent RF measurement problems can be traced to:

Wrong frequency range

Wrong instrument type

Changing RF environment

Inconsistent measurement method

Incorrect expectations about broadband RF measurement

Understanding the application first can save considerable troubleshooting time.

For product selection, technical support, inspection or service enquiries, contact MTM Precision with your application details.

Contact MTM Precision Sdn Bhd

Showroom & Service Centre: Puchong, Selangor, Malaysia

Operating Hours: Monday-Friday, 9:00 AM-6:00 PM

Tel: 03-8080 7172

WhatsApp: +6016-660 7346

Email: mtmpre@yahoo.com

Website: www.mtmpre.com.my

Serving customers throughout Malaysia, including Selangor, Kuala Lumpur, Johor, Penang, Melaka, Negeri Sembilan, Perak, Pahang, Kelantan, Terengganu, Kedah, Perlis, Sabah and Sarawak.

TENMARS TM-195 RF Measurement Troubleshooting Guide Malaysia

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