524Opening the Test Tool

Referring to Figure 5-1, use the following procedure to open the test tool. 1. Remove the battery pack (see Section 5.2.2) 2. Unscrew the four M3 Torx screws (item 12) that secure the bottom case to the top case. 3. Hold the test tool upside down, and lift off the bottom case. Figure 5-1. Fluke 123 124 125 Main Assembly Figure 5-1. Fluke 123 124 125 Main Assembly

21 Introduction

FLUKE guarantees the properties expressed in numerical values with the stated tolerance. Specified non-tolerance numerical values indicate those that could be nominally expected from the mean of a range of identical ScopeMeter test tools. Specifications are based on a one year calibration cycle. The environmental data mentioned in this manual are based on the results of the manufacturer's verification procedures. The test tool has been designed and tested in accordance with Standards ANSI ISA...

211 EMC Immunity

The Fluke 123 124 125, including standard accessories, conforms with the EEC directive 89 336 for EMC immunity, as defined by IEC1000-4-3, with the addition of tables 2-1 to 2-3. Trace Disturbance with STL120 See Table 2-1 and Table 2-2. Table 2-1. No Visible Trace Disturbance Table 2-1. No Visible Trace Disturbance Frequency range 10 kHz to 27 MHz Frequency range 27 MHz to 1 GHz 100 mV div to 500 V div 100 mV div to 500 V div 500 mV div to 500 V div 100 mV div to 500 V div Table 2-2. Trace...

231 Input A and Input B

0.5 divisions or 5 mV 1.5 divisions 4 divisions 0.5 divisions or 5 mV 1.5 divisions 4 divisions 500 mV, 5 V, 50 V, 500V, 1250V (0.5 +5 counts) 12 counts Common Mode Rejection (CMRR) > 100 dB DC Move influence True RMS Voltages (VAC and VAC+DC) DC coupled DC to 60 Hz (VAC+DC) 1 Hz to 60 Hz (VAC) AC or DC coupled 60 Hz to 20 kHz 20 kHz to 1 MHz 1 MHz to 5 MHz 5 MHz to 12.5 MHz 5 MHz to 20 MHz AC coupled with 1 1 (shielded) test leads 60 Hz (6 Hz with 10 1 probe) 50 Hz (5 Hz with 10 1 probe) 33...

33How To Verify

Verification procedures for the display function and measure functions follow. For each procedure the test requirements are listed. If the result of the test does not meet the requirements, the test tool should be recalibrated or repaired if necessary. Some of the tests are slightly different for Fluke 123, 124, and Fluke 125. This is caused by the higher vertical and trigger bandwidth in Fluke 124 and 125. Moreover Fluke 125 has extra measuring functions and a slightly different way of...

35 Input A and Input B Tests

During verification you must open menus, and to choose items from the menu. Proceed as follows to make choices in a menu (see Figure 3.2) Open the menu, for example press S (new) or US (old) . Press CZ3CH) to highlight the item to be selected in a menu. Press I I to confirm the selection and to jump to the next item group (if present). Item groups in a menu are separated by a vertical line. After pressing SB in the last menu item group, the menu is closed. A& *() A& *() A& *() If an...

351 Input A and B Base Line Jump Test

Proceed as follows to check the Input A and Input B base line jump 1. Short circuit the Input A and the Input B shielded banana sockets of the test tool. Use the BB120 banana to BNC adapter, and a 50Q (or lower) BNC termination. 2. Select the following test tool setup Turn Input B on (if not already on). Press 1 1 to select auto ranging (AUTO in top of display). ( 1 I toggles between AUTO and MANUAL ranging). Fluke 123 124 press H H to open the SCOPE INPUTS menu. Fluke 123 124 press H to open...

3514 Harmonics Fluke 125

Connect the test tool to the 5500A as for the previous test (see Figure 3-5). 3. Operate the OO keys to highlight HARMONICS. 4. Press 1 1 to open the B AMPERE PROBE menu, and choose SENSITIVITY 10 mV A 5. Press B to open the HARMONICS AMP menu. 6. Set the 5500A to source a square wave 2.5 Vpp, 60 Hz (NORMAL output, WAVE square). Set the 5500A to Operate (OPR). 7. Check if the bargraphs of AMP HARMONICS look like the the ones in Figure 3-6. 8. Press I I to two times to activate HARMONICS VOLT...

3516 Resistance Measurements Test

Connect the test tool to the 5500A as shown in Figure 3-9. 2. Select the following test tool setup Press I 1 to select auto ranging (AUTO in top of display). Press to open the INPUT A MEASUREMENTS menu, and choose MEASURE on A OHM Q 3. Set the 5500A to the first test point in Table 4-8. Set the 5500A to Operate (OPR). Use the 5500A COMP 2 wire mode for the verifications up to and including 50 kq. For the higher values, the 5500A will turn off the COMP 2 wire mode. 4. Observe the Input A main...

3519Capacitance Measurements Test

Connect the test tool to the 5500A as for the previous test (see Figure 3-9). Ensure that the 5500A is in Standby. 2. Select the following test tool setup Press to open the INPUT A MEASUREMENTS menu, and choose MEASURE on A CAP Press I 1 to select auto ranging (AUTO in top of display). Press to open the INPUT A MEASUREMENTS menu. Fluke 123 124 press SB to select the METER A OPTIONS MENU, and choose SMOOTHING NORMAL ZERO REF ON The ZERO REF function is used to eliminate the capacitance of the...

352 Input A Trigger Sensitivity Test

Proceed as follows to test the Input A trigger sensitivity 1. Connect the test tool to the 5500A as shown in Figure 3-3. 2. Select the following test tool setup Press I 1 to select auto ranging (AUTO in top of display). Do not press L B anymore Using n I_I change the sensitivity to select manual sensitivity ranging, and lock the Input A sensitivity on 200 mV div. 3. Set the 5500A to source a 5 MHz leveled sine wave of 100 mV peak-to-peak (SCOPE output, MODE levsine). Set the 5500A to Operate...

3520 Video Trigger Test

This test is based upon use of a TV signal generator. If you have a Fluke 5500A Calibrator with 600 MHz Oscilloscope Option, there is no need to use a separate TV signal generator. Fluke 5500A with 600 MHz option can generate video signals. These video signals must be applied to the test tool via a 50Q Coax Cable and terminated with a 50Q feed through termination. The video signal is simpler than that from a TV signal generator. It consists of sync pulses and one marker that can be adjusted to...

355 Input B Frequency Measurement Accuracy Test

Proceed as follows to test the Input B frequency measurement accuracy 1. Connect the test tool to the 5500A as shown in Figure 3-4. 2. Select the following test tool setup Press 1 I select auto ranging (AUTO in top of display). Press B to open the INPUT B MEASUREMENTS menu, and choose INPUT B ON MEASURE on B Hz Fluke 123 124 press H S3 to open the SCOPE INPUTS menu. Fluke 123 124 press to open the TRIGGER menu, and choose INPUT B SCREEN UPDATE FREE RUN AUTO RANGE > 15Hz Fluke 125 press to...

358 Input A and B Trigger Level and Trigger Slope Test

Connect the test tool to the 5500A as shown in Figure 3-5. 2. Select the following test tool setup Turn Input B on ( if not already on). Using I 11_J change the sensitivity to select manual sensitivity ranging, and lock the Input A and Input B sensitivity on 1V div. Move the Input A and Input B ground level (indicated by zero icon ) to the center grid line. Proceed as follows Press to enable the arrow keys for moving the Input A ground level. Press n to enable the arrow keys for moving the...

44 Contrast Calibration Adjustment

After entering the Maintenance mode, the test tool display shows Warming Up (CL0200) IDLE (valid). Do not press I I now If you did, turn the test tool off and on, and enter the Maintenance mode again. Proceed as follows to adjust the maximum display darkness (CL0100), the default contrast (CL0110) , and the maximum display brightness (CL0120). 1. Press 1 I a three times to select the first calibration step. The display shows Contrast (CL 0100) MANUAL 2. Press CAL. The display will show a dark...

45 Warming Up Pre Calibration

After entering the Warming-Up & Pre-Calibration state, the display shows WarmingUp (CL 0200) IDLE (valid) or (invalid). You must always start the Warming Up & Pre Calibration at Warming Up (CL0200) . Starting at another step will make the calibration invalid 1. Remove all input connections from the test tool. 2. Press to start the Warming-Up & Pre-Calibration. The display shows the calibration step in progress, and its status. The first step is WarmingUp (CL0200) BUSY 00 29 59 . The...

46 Final Calibration

HF Gain Calibration Input Connections Figure 4-3. HF Gain Calibration Input Connections 3. Set the 5500A to source a 1 kHz fast rising edge square wave (Output SCOPE, MODE edge) to the first calibration point in Table 4-1. 4. Set the 5500A in operate (OPR). 5. Press I I to start the calibration. 6. Wait until the display shows calibration status READY . 7. Press I I to select the next calibration step, set the 5500A to the next calibration point, and start the calibration. Continue...

468 Capacitance Gain Low and High

Proceed as follows to do the Capacitance Gain calibration 1. Press to select calibration adjustment step Cap. Low (CL 0900) IDLE 2. Connect the test tool to the 5500A as shown in Figure 4-9. 3. Set the 5500A to supply 250 mV DC. 4. Set the 5500A to operate (OPR). 5. Press to start the calibration. 6. Wait until the display shows Cap. Low (CL 0900) READY. 7. Press to select calibration adjustment step Cap. High (CL 0910) IDLE 8. Set the 5500A to supply 50 mV DC. 9. Press 1 I to start the...

469 Capacitance Clamp Zero

Proceed as follows to do the Capacitance Clamp Voltage & Zero calibration 1. Press I I to select calibration adjustment step Cap. Clamp (CL 0940) IDLE 2. Remove any input connection from the test tool (open inputs). 3. Press to start the calibration. The capacitance measurement clamp voltage Cap. Clamp (CL 0940), and the zero of the capacitance ranges Cap. Zero (CL 0950) Cap. Zero (CL 0953) will be calibrated now. 4. Wait until the display shows Cap. Zero (CL 0953) READY.

47 Save Calibration Data and Exit

Proceed as follows to save the calibration data, and to exit the Maintenance mode 1. Remove all test leads from the test tool inputs. Do NOT turn off the test tool 2. Press (EXIT). The test tool will display Calibration data valid indicates that the calibration adjustment procedure is performed correctly. It does not indicate that the test tool meets the characteristics listed in Chapter 2. 4. Press 1 1 (YES) to save and exit. - The calibration number and date will be updated only if the...

62How to Obtain Parts

Contact an authorized Fluke service center. To locate an authorized service center refer to the second page of this manual (back of the title page). In the event that the part ordered has been replaced by a new or improved part, the replacement will be accompanied by an explanatory note and installation instructions, if necessary. To ensure prompt delivery of the correct part, include the following information when you place an order Instrument model (Fluke 123, 124 or 125), 12 digit instrument...

Calls attention to a potential danger that requires correct procedures or practices to prevent personal injury

1.2.4 Symbols used in this Manual and on Instrument Read the safety information in the Users Manual 11 11 DOUBLE INSULATION (Protection 1-1 Class) Equal potential inputs, connected internally A Static sensitive components (black yellow). tfSf Do no dispose of this product as unsorted municipal waste. Go to Fluke's website for recycling information Whenever it is likely that safety has been impaired, the instrument must be turned off and disconnected from line power. The matter should then be...

Disassembling the Test Tool

Disassembling 5.1.1 Required 5.2.2 Removing the Battery 5.2.3 Removing the 5.2.4 Opening the Test 5.2.5 Removing the Main PCA 5.2.6 Removing the Display 5.2.7 Removing the Keypad and Keypad 5.3 Disassembling the Main PCA 5.4 Reassembling the Main PCA 5.5 Reassembling the Test

Procedures in this chapter should be performed by qualified service personnel only To avoid electrical shock do not

The test tool should be calibrated and in operating condition when you receive it. The following performance tests are provided to ensure that the test tool is in a proper operating condition. If the test tool fails any of the performance tests, calibration adjustment (see Chapter 4) and or repair (see Chapter 7) is necessary. The Performance Verification Procedure is based on the specifications, listed in Chapter 2 of this Service Manual. The values given here are valid for ambient...

462 Delta T Gain Trigger Delay Time Pulse Adjust Input A

Proceed as follows to do the calibrations 1. Press I I to select calibration step Delta T (CL 0700) IDLE 2. Connect the test tool to the 5500A as shown in Figure 4-4. 3. Set the 5500A to source a 1V, 1 MHz fast rising (rise time < 1 ns) square wave (SCOPE output, MODE edge). 4. Set the 5500A to operate (OPR). 5. Press I I to start the calibration. The Delta T gain, Trigger Delay (CL0720), and Pulse Adjust Input A (CL0640) will be calibrated. 6. Wait until the display shows Pulse Adj A (CL...

42Equipment Required For Calibration

The primary source instrument used in the calibration procedures is the Fluke 5500A. If a 5500A is not available, you can substitute another calibrator as long as it meets the minimum test requirements. Fluke 5500A Multi Product Calibrator, including 5500A-SC Oscilloscope Calibration Option. Stackable Test Leads (4x), supplied with the 5500A. 50Q Coax Cables (2x), Fluke PM9091 or PM9092. 50Q feed through terminations (2x), Fluke PM9585. Fluke BB120 Shielded Banana to Female BNC adapters (2x),...

3511 Input A and B AC Input Coupling Test

Proceed as follows to test the Input A and B AC coupled input lower transition point 1. Connect the test tool to the 5500A as for the previous test (see Figure 3-5). 2. Select the following test tool setup Use the setup of the previous step (AUTO time base, traces at vertical center). Using mi I_I select 200 mV div for Input A and B (500 mV range). Fluke 123 124 press H IS to open the SCOPE INPUTS menu, and choose INPUT A AC NORMAL INPUT B AC NORMAL. Fluke 123 124 press H IS to open the SCOPE...

27 Miscellaneous

Waveform display Vertical Horizontal Internal Battery Pack BP120MH Battery Power Operating Time Allowable ambient temperature during charging 72 x 72 mm (2.83 x 2.83 in) 240 x 240 pixels 8 divisions of 20 pixels 9.6 divisions of 25 pixels via Power Adapter PM8907 10 to 21V DC 5W typical 5 mm jack 6 hours with bright backlight 6.5 hours with dimmed backlight 7 hours with test tool off 60 hours with test tool on Number of Screen + Setup Memories Fluke 123 Fluke 124 Number of Data Set memories...

55Reassembling the Test Tool

Reassembling the test tool is the reverse of disassembly. However you must follow special precautions when reassembling the test tool. Refer also to figure 5-1. The first shipped units are provided with a yellow tube on the two notches with the screw inserts at the top in the top case,. The reason for this is that the display assembly in these units is smaller than in the later units. All display assemblies supplied as spare part are of the latest type, and do not need the yellow tubes in the...

34Display and Backlight Test

Proceed as follows to test the display and the backlight 1. Press LJ to turn the Test tool on. 2. Fluke 123 press I J and verify that the backlight is dimmed. Then select maximum backlight brightness again. Fluke 124 125 press , then press . Verify that the test tool can be switched between dimmed backlight and maximum brightness with the 00 keys. During the tests, use maximum brightness for the best visibility. 3. Remove the adapter power, and verify that the backlight is dimmed. 4. Apply the...

3513 Input A and B Phase Measurements Test

Connect the test tool to the 5500A as for the previous test see Figure 3-5 . 2. Select the following test tool setup Press 1 1 to select auto ranging AUTO in top of display . Press dt to open the INPUT A MEASUREMENTS menu, and choose MEASURE on A PHASE Press S to open the INPUT B MEASUREMENTS menu, and choose INPUT B ON MEASURE on B PHASE Using B 1_I select 1V div for input A and B. 3. Set the 5500A to source a sine wave, to the first test point in Table 3-6 NORMAL output, WAVE sine . Set...

5

Fluke 123 Inside

Referring to Figure 5-1, use the following procedure to remove the main PCA unit. 1. Open the test tool see Section 5.2.4 . 2. Disconnect the LCD flex cable, and the keypad foil flat cable, see Figure 5-2. Unlock the cables by lifting the connector latch. The latch remains attached to the connector body. The keypad foil is provided with a shielding flap that covers the LCD flat cable. The end of the flap is put under the main PCA unit shielding plate, and can be easily pulled out. To avoid...

412Calibration number and date

When storing valid calibration data in FlashROM after performing the calibration adjustment procedure, the calibration date is set to the actual test tool date, and calibration number is raised by one. To display the calibration date and - number 1. Press LH to open the USER OPTIONS menu. 2. Press to show the VERSION amp CALIBRATION screen see Figure 4.1 . 3. Press 1 1 to return to normal mode. SOFTWARE UERSION U02.00 CALIBRATION NUMBER CALIBRATION DATE 02 19 2007 BATTERV REFRESH BATE 02 19...

467 Gain

Proceed as follows to do the Gain Ohm calibration 1. Press to select calibration adjustment step Gain Ohm CL 0860 IDLE 2. Connect the UUT to the 5500A as shown in Figure 4-8. Notice that the sense leads must be connected directly to the test tool. 3. Set the 5500A to the first test point in Table 4-4. Use the 5500A COMP 2 wire mode for the calibration adjustments up to and including 100 kq. For the higher values, the 5500A will turn off the COMP 2 wire mode. 4. Set the 5500A to operate OPR . 5....

3

Scoop Autotechniek Fluke 123

Test Tool Input A-B to 5500A Normal Output for gt 300V Figure 3-8. Test Tool Input A-B to 5500A Normal Output for gt 300V 2. Select the following test tool setup Press I 1 to select auto ranging AUTO in top of display . Do not press tHiiLl anymore Press H to open the INPUT A MEASUREMENTS menu, and choose Press to open the INPUT A MEASUREMENTS menu, and choose MEASURE on A Vdc Vdc becomes main reading, Vac secondary reading Press H to open the INPUT B MEASUREMENTS menu, and choose...

43Starting Calibration Adjustment

Follow the steps below to start calibration adjustments. 1. Power the test tool via the power adapter input, using the PM8907 power adapter. 2. Check the actual test tool date, and adjust the date if necessary Press to open the USER OPTIONS menu Using OO select DATE ADJUST press to open the DATE ADJUST menu adjust the date if necessary. 3. Select the Maintenance mode. The Calibration Adjustment Procedure uses built-in calibration setups, that can be accessed in the Maintenance mode. To enter...

54Reassembling the Main PCA Unit

Reassembling the main PCA is the reverse of disassembly. However you must follow special precautions when reassembling the main PCA unit. 1. Ensure the input banana jacks have the rubber sealing ring in place Input A, B item 9, COM input item 10, see Figure 5-3 . 2. Do not forget to install the power connector insulator item 3 and the LED holder item 6 . 3. Notice the correct position of the shielding box, main PCA notice the shielding plates on the PCA , and shielding plate, as shown in Figure...

53 Disassembling the Main PCA Unit

Referring to Figure 5-3, use the following procedure disassemble the main PCA unit. 1. Remove the M2.5 Torx screws items 1 and 8 that secure the main shielding plate item 7 to the main PCA shielding box item 5 . 2. Pull the shielding plate away from the input banana jacks as you rotate the far end upwards, and then remove it. 3. Remove the power input insulator item 3 , and the LED guide piece item 6 . 4. Remove the M2.5.Torx screws item 2 that secure the PCA to the shielding box. 5. Lift the...

11Introduction to Service Manual

The Fluke 123, 124, 125 Industrial Scopemeters hereafter referred to as 'test tool' offers an extensive and powerful set of measurement capabilities. This Service Manual provides the information necessary to maintain the test tool at customer level. The following information is presented in this Service Manual Chapter 1. Introduction and safety Instructions. Read carefully before using or servicing the test tool. Chapter 2. Characteristics. A complete set of detailed specifications. Chapter 3....

32 Equipment Required For Verification

The primary source instrument used in the verification procedures is the Fluke 5500A. If a 5500A is not available, you can substitute another calibrator as long as it meets the minimum test requirements. Fluke 5500A Multi Product Calibrator, including 5500A-SC Oscilloscope Calibration Option. Stackable Test Leads 4x , supplied with the 5500A. 50Q Coax Cables 2x , Fluke PM9091 1.5m or PM9092 0.5m . 50Q feed through terminations 2x , Fluke PM9585. Fluke BB120 Shielded Banana to Female BNC...

64 Final Assembly Parts

Keyboard Foil For Fluke Oscilloscope

See Table 6-1 and Figure 6-1 for the Final Assembly parts. Main PCA unit for Fluke 123 124 or 125. The Main PCA in this Analyzer is only available to Fluke Service Centers due to the programming that is necessary after installation. The Test Tool contains a Rechargeable Ni-MH battery. Do not mix with the solid wastestream. Spent batteries should be disposed of by a qualified recycler or hazardous materials handler. Figure 6-1. Fluke 123 124 125 Final Assembly Figure 6-1. Fluke 123 124 125 Final...

Limited Warranty Limitation of Liability

Each Fluke product is warranted to be free from defects in material and workmanship under normal use and service. The warranty period is three years for the Analyzer and one year for its accessories. The warranty period begins on the date of shipment. Parts, product repairs and services are warranted for 90 days. This warranty extends only to the original buyer or end-user customer of a Fluke authorized reseller, and does not apply to fuses, disposable batteries or to any product which, in...