1. પરિચય
The PCE Instruments PCE-LT 15 is a versatile combination device functioning as both a digital multimeter (DMM) and a LAN cable tester. It is designed for accurate measurement of AC/DC voltage and resistance, as well as for performing continuity and diode tests. Additionally, it features a dedicated function for testing LAN cables and patch fields, providing pin-out indication for network cable integrity.
2. સલામતી માહિતી
Before operating the PCE-LT 15, please read and understand all safety instructions. Improper use can result in electric shock, injury, or damage to the device. Always adhere to local and national safety regulations.
- ઇલેક્ટ્રિકલ સલામતી: This device is rated for CAT III 600V. Do not attempt to measure voltages exceeding this rating.
- Probe Handling: Always ensure test leads are in good condition, free from cracks or damage. Hold probes by the insulated parts.
- Circuit De-energization: Before performing resistance or continuity tests, ensure the circuit under test is de-energized.
- બેટરી સલામતી: Replace batteries when the low battery indicator appears. Do not mix old and new batteries or different battery types. Dispose of batteries according to local regulations.
- પર્યાવરણીય પરિસ્થિતિઓ: Do not operate the device in wet conditions or in the presence of explosive gases or dust.
3. ઉત્પાદન ઓવરview
The PCE-LT 15 integrates a digital multimeter and a LAN cable tester into a compact, handheld unit. It features a clear digital display for multimeter functions and an LED bargraph for LAN testing.
Figure 1: The PCE-LT 15 device, showing its digital display, rotary function switch, control buttons, and connected test leads.
3.1. ઘટકો
- મુખ્ય એકમ: Contains the digital multimeter, LAN cable tester controls, and display.
- દૂરસ્થ એકમ: Used for LAN cable testing, connects to the far end of the cable.
- ટેસ્ટ લીડ્સ: Red and black leads for multimeter measurements.
- ડિજિટલ ડિસ્પ્લે: Shows measurement values for multimeter functions.
- LED Pin-Out Indicator: Displays the status of each wire in a LAN cable.
- Rotary Function Switch: Selects measurement modes (AC/DC Voltage, Resistance, Continuity, OFF).
- નિયંત્રણ બટનો: SEL (Select), RNG (Range), HOLD (Data Hold), ON/OFF (LAN Tester).
4. સેટઅપ
4.1. બેટરી ઇન્સ્ટોલેશન
The PCE-LT 15 requires two types of batteries:
- Multimeter Function: Requires 2 x 1.5V AAA batteries. Open the battery compartment on the main unit, insert batteries with correct polarity, and secure the cover.
- LAN Tester Function: Requires 1 x 9V 6F22 battery. Open the battery compartment on the main unit, insert the battery with correct polarity, and secure the cover.
Ensure batteries are correctly installed before use. Replace batteries when the low battery indicator appears on the display.
4.2. ટેસ્ટ લીડ્સને કનેક્ટ કરવું
For multimeter functions, insert the red test lead into the 'VΩmA' input jack and the black test lead into the 'COM' (common) input jack. Ensure connections are secure.
5. ઓપરેટિંગ સૂચનાઓ
5.1. પાવર ચાલુ/બંધ
The multimeter function powers on when the rotary switch is moved from the 'OFF' position to any measurement function. To power off the multimeter, turn the rotary switch to 'OFF'. The LAN tester has a separate 'ON/OFF' button.
5.2. AC/DC વોલ્યુમtage માપન
- Turn the rotary switch to the 'V~' (AC Voltage) અથવા 'V=' (DC વોલ્યુમtage) position. The device is auto-ranging.
- Connect the test leads in parallel to the circuit or component where voltage માપવાનું છે.
- ભાગ વાંચોtage મૂલ્ય LCD પર પ્રદર્શિત થાય છે.
5.3. પ્રતિકાર માપન
- Ensure the circuit or component is de-energized before measurement.
- Turn the rotary switch to the 'Ω' (Resistance) position.
- માપવાના ઘટક પર ટેસ્ટ લીડ્સ જોડો.
- Read the resistance value displayed on the LCD.
5.4. સાતત્ય પરીક્ષણ
- ખાતરી કરો કે સર્કિટ અથવા ઘટક ડી-એનર્જાઇઝ્ડ છે.
- Turn the rotary switch to the 'Ω' position, then press the 'SEL' button to cycle to the continuity mode (indicated by a buzzer icon).
- સર્કિટ અથવા ઘટકમાં ટેસ્ટ લીડ્સને જોડો.
- If the measured resistance is less than approximately 25Ω, the device will emit an audible alarm, indicating continuity.
5.5. ડાયોડ ટેસ્ટ
- Ensure the diode is disconnected from any power source.
- Turn the rotary switch to the 'Ω' position, then press the 'SEL' button to cycle to the diode test mode (indicated by a diode symbol).
- Connect the red test lead to the anode and the black test lead to the cathode of the diode. A forward voltage ડ્રોપ દર્શાવવામાં આવશે.
- Reverse the test leads. An open circuit (OL) reading indicates a good diode.
5.6. LAN Cable Testing
- Connect one end of the LAN cable to the RJ45 port on the main unit.
- Connect the other end of the LAN cable to the RJ45 port on the remote unit.
- Press the 'ON/OFF' button for the LAN Cable Tester.
- Press the 'TEST' button to initiate the cable test.
- Observe the 'PIN-OUT INDICATOR' LEDs (1-8, GND) on the main unit. The LEDs will sequentially light up, indicating the continuity and correct wiring of each pin. Any missing or incorrectly lit LEDs indicate a fault (e.g., open, short, cross-over).
6. જાળવણી
6.1. સફાઈ
Wipe the device with a dry, soft cloth. Do not use abrasive cleaners or solvents. Ensure no moisture enters the device.
6.2. બેટરી રિપ્લેસમેન્ટ
Replace batteries promptly when the low battery indicator is displayed to ensure accurate measurements and prevent device malfunction. Refer to Section 4.1 for battery installation instructions.
6.3. સંગ્રહ
When not in use for extended periods, remove the batteries to prevent leakage. Store the device in a cool, dry place, away from direct sunlight and extreme temperatures.
7. મુશ્કેલીનિવારણ
- No Display/Device Not Powering On: Check battery installation and ensure batteries have sufficient charge. Replace if necessary.
- ખોટા વાંચન: Ensure test leads are properly connected and not damaged. Verify the correct measurement function is selected. Check battery level.
- 'OL' (Overload) Indicator: This indicates the measured value exceeds the selected range. For auto-ranging, it means the value is beyond the device's maximum capability for that function.
- LAN Test Failure: Check both ends of the LAN cable for proper connection to the main and remote units. Inspect the cable for physical damage. Ensure the LAN tester batteries are charged.
8. સ્પષ્ટીકરણો
| કાર્ય | શ્રેણી | ઠરાવ | ચોકસાઈ |
|---|---|---|---|
| ડીસી વોલ્યુમtage | 400 mV | 0.1 mV | ± (0.5% of v/m + 3 Dgt) |
| 4 વી | 1 mV | ||
| 40 વી | 10 mV | ||
| 400 વી | 100 mV | ||
| 1000 વી | 1 વી | ||
| એસી વોલ્યુમtage | 400 mV | 0.1 mV | ± (1% from + 5 Dgt) |
| 4 વી | 1 mV | ||
| 40 વી | 10 mV | ||
| 400 વી | 100 mV | ||
| 750 વી | 1 વી | ||
| પ્રતિકાર | 400 Ω | 0.1 Ω | ± (1.2% from + 3 Dgt) |
| 4 કે | 1 Ω | ||
| 40 કે | 10 Ω | ||
| 400 કે | 100 Ω | ||
| 4 MΩ | 1 કે | ||
| 40 MΩ | 10 કે | ± (2% from + 4 Dgt) | |
| સાતત્ય પરીક્ષણ | Alarm when measured value < 25 Ω | ||
| ડિસ્પ્લે | LC display for multimeter functions, LED bargraph for LAN testers | ||
| પાવર સપ્લાય | LAN tester: 1 x 9V 6F22 battery; Multimeter: 2 x 1.5V AAA battery | ||
| પરિમાણો (હેન્ડસેટ) | 165 x 82 x 42 મીમી / 6.5 x 3.2 x 1.7 ઇંચ | ||
| Dimensions (Remote Unit) | 75 x 30 x 25 મીમી / 3 x 1.2 x 1 ઇંચ | ||
| વજન (હેન્ડસેટ) | 240 ગ્રામ / <1 lb | ||
| Weight (Remote Unit) | 30 ગ્રામ / <1 lb | ||
| Electrical Security | કેટ III 600 વી | ||
9. વોરંટી અને સપોર્ટ
For warranty information, technical support, or service inquiries, please contact your authorized PCE Instruments dealer or the manufacturer directly. Retain your purchase receipt as proof of purchase for warranty claims.
