11

Read these pages carefully before beginning to install and use the instrument. The following paragraphs contain information, cautions and warnings which must be followed to ensure safe operation and to keep the instrument in a safe condition. Servicing described in this manual is to be done only by qualified service personnel. To avoid electrical shock, do not service the instrument unless you are qualified to do so. For the correct and safe use of this instrument it is essential that both...

2

Modes Standards Polarity Sensitivity 0.5 divisions or 5 mV 1.5 divisions 4 divisions Continuous fully automatic adjustment of amplitude, time base, trigger levels, trigger gap, and hold-off. Manual override by user adjustment of amplitude, time base, or trigger level. Captures up to 40 ns glitches and displays analog-like persistence waveform. Records and displays the minimum and maximum of waveforms over time. The accuracy of all measurements is within ( of reading + number of counts) from 18...

4

Using 1 _J toggle the sensitivity of Input A between 5 and 10 mV div. After changing the sensitivity wait some seconds until the trace has settled. Observe the Input A trace, and check to see if it is set to the same position after changing the sensitivity. The allowed difference is 0.04 division ( 1 pixel). 7. Using 1 _J toggle the sensitivity of Input B between 5 and 10 mV div. After changing the sensitivity wait some seconds until the trace has settled. Observe the Input B trace, and check...

451 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 50D. (or lower) BNC termination. 2. Select the following test tool setup Turn Input B on (if not already on). Press to select auto ranging (AUTO in top of display). ( toggles between AUTO and MANUAL ranging). Press IB to open the SCOPE INPUTS menu. Press 1 to open the SCOPE OPTIONS menu, and choose...

4513 Input A and B Phase Measurements Test

Connect the test tool to the 5500A as for the previous test (see Figure 4-5). 2. Select the following test tool setup Press H to select auto ranging (AUTO in top of display). Press jKi to open the INPUT A MEASUREMENTS menu, and choose MEASURE on A PHASE Press to open the INPUT B MEASUREMENTS menu, and choose INPUT B ON MEASURE on B PHASE Using ( 11_ select 1V div for input A and B. 3. Set the 5500A to source a sine wave, to the first test point in Table 4-6 (NORMAL output, WAVE sine). 4....

4518 Capacitance Measurements Test

Connect the test tool to the 5500A as for the previous test (see Figure 4-7). Ensure that the 5500A is in Standby. 2. Select the following test tool setup Press jKi to open the INPUT A MEASUREMENTS menu, and choose MEASURE on A CAP Press to select auto ranging (AUTO in top of display). Press TZ to open the INPUT A MEASUREMENTS menu. Press ISA the 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 test leads....

454Input A Frequency Measurement Accuracy Test

Proceed as follows to test the Input A frequency measurement accuracy 1. Connect the test tool to the 5500A as for the previous test (see Figure 4-3). 2. Select the following test tool setup Press to select auto ranging (AUTO in top of display). Press j5 to open the INPUT A MEASUREMENTS menu, and choose MEASURE on A Hz 3. Set the 5500A to source a leveled sine wave of 600 mV peak-to-peak (SCOPE output, MODE levsin). 4. Set the 5500A frequency according to the first test point in Table 4-1. 5....

54 Contrast Calibration Adjustment

After entering the Maintenance mode, the test tool display shows Warming Up (CL 0200) IDLE (valid). Do not press 1 1 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 I 1 a three times to select the first calibration step. The display shows Contrast (CL 0100) MANUAL 2. Press 1 1 CAL. The display will show a...

55 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 1 1 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 ....

567Zero Ohm firmware V0100 only

Proceed as follows to do the Zero Ohm calibration 1. Press 1 1 to select calibration adjustment step Zero Ohm (CL 0840) IDLE 2. Make a short circuit between the Input A banana socket and the COM input . 3. Press to start the Ohm Zero calibration of all ranges (CL 0840 CL 0846). 4. Wait until the display shows the calibration status Zero Ohm (CL 0846) READY. 5. Remove the Input A to COM short.

63 Disassembling the Main PCA Unit

Referring to Figure 6-3, 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....

64Reassembling 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 4-6). 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...

65Reassembling 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 6-1. 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...

755 Optical Port Serial RS232 Interface

Check the voltage RXDA on TP522 for +200 mV, and the voltage RXD on TP527 (buffered and amplified RXDA voltage) for +3.3V. 2. Shine with a lamp in the optical port (H522). Check the voltage RXDA on TP522 for 0 -0.6V, and the voltage RXD on TP527 for 0V. 1. Check the voltage TXD on TP521 for +3.3V. 2. Press _J to open the SAVE & PRINT menu. 3. Press I_I PRINT SCREEN to start the test tool data output. Check the voltage TXD on TP521 for a burst of pulses (pulses from +2V to +3.3V). The length...

756 Channel A Channel B Voltage Measurements

Press _ to open the SCOPE INPUTS menu, and select INPUT A DC NORMAL INPUT B DC NORMAL 2. Press _ to open the SCOPE INPUTS menu. Press 1 to open the SCOPE OPTIONS menu, and select SCOPE MODE ROLL MODE WAVEFORM MODE NORMAL. 3. Apply a 1 kHz square wave to Input A and Input B, and change the test tool sensitivity (V div) to make the complete square wave visible. 4. Check TP154 (ADC-A) and TP254 (ADC-B) for the signal shown below Input positive. Input zero. Input negative A trace amplitude of 1...

Batident

The BATTIDENT line (pin 90) is connected to R508 on the Power part, and to a resistor in the battery pack. If the battery is removed, this is signaled to the D-ASIC (BATTIDENT line goes high). The MAINVAL signal (pin91) is supplied by the P-ASIC, and indicates the presence of the power adapter voltage (high present). The FREQPS signal (pin 93) is also supplied by the P-ASIC. It is the same signal that controls the Fly Back Converter control voltage FLYGATE. The D-ASIC measures the frequency in...

Circuit Descriptions

3.2 Block 3.2.1 Channel A, Channel B Measurement 3.2.2 Trigger 3.2.3 Digital 3.2.4 Power 3.2.5 Start-up Sequence, Operating 3.3 Detailed Circuit 3.3.1 Power 3.3.2 Channel A - Channel B Measurement 3.3.3 Trigger 3.3.4 Digital Section 3.2 describes the functional block diagram shown in Figure 3-1. It provides a quick way to get familiar with the test tool basic build-up. Section 3.3 describes the principle of operation of the test tool functions in detail, on the basis of the circuit diagrams...

Fluke 5500a Calibrator

Set the 5500A to supply 250 mV DC. 4. Set the 5500A to operate (OPR). 5. Press 1 1 to start the calibration. 6. Wait until the display shows Cap. Low (CL 0900) READY. 7. Press I 1 to select calibration adjustment step Cap. High (CL 0910) IDLE 8. Set the 5500A to supply 50 mV DC. 9. Press 1 1 to start the calibration. 10. Wait until the display shows Cap High (CL 910) READY. 12. Continue at Section 5.6.10.

Info

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 referred to qualified technicians. Safety is likely to be impaired if, for example, the instrument fails to perform the intended measurements or shows visible damage. Removing the instrument covers or removing parts, except those to which access can be gained by hand, is likely to expose live parts and accessible terminals which can be dangerous to...

Performance Verification

4.2 Equipment Required For 4.3 How To 4.4 Display and Backlight 4.5 Input A and Input B 4.5.1 Input A and B Base Line Jump 4.5.2 Input A Trigger Sensitivity 4.5.3 Input A Frequency Response Upper Transition Point 4.5.4 Input A Frequency Measurement Accuracy 4.5.5 Input B Frequency Measurement Accuracy 4.5.6 Input B Frequency Response Upper Transition Point 4.5.7 Input B Trigger Sensitivity 4.5.8 Input A and B Trigger Level and Trigger Slope 4.5.9 Input A and B DC Voltage Accuracy 4.5.10 Input A...

Refpwm2

The unidirectional SDA-SCL serial bus (pin 56, 57) is used to send control data to the C-ASIC's (e.g. change attenuation factor), and the T-ASIC (e.g. select other trigger source). The SDA line transmits the data bursts, the SCL line transmits the synchronization clock (1.25 MHz). Via the probe detection inputs PROBE-A and PROBE-B (pin 54, 55), the D-ASIC detects if the Input A and B probes have been connected disconnected. The SUPPRDET signal (pin 99) can suppress the probe detection. If this...

Rs232

The optical interface is used for two purposes enable serial communication (RS232) between the test tool and a PC or printer enable external triggering using the Isolated Trigger Probe ITP120 The received data line RXDA (P-ASIC pin 75) is connected to ground via a 20 kQ resistor in the P-ASIC. If no light is received by the light sensitive diode H522, the RXDA line is +200 mV, which corresponds to a 1 (+3V) on the RXD (P-ASIC output pin 76) line. If light is received, the light sensitive diode...

St8001cgm

Move the Input A and Input B ground level (indicated by zero icon ) to the center grid line. Proceed as follows Press 1 1 to enable the arrow keys for moving the Input A ground level. Press 1 1 to enable the arrow keys for moving the Input B ground level. Using the keys move the ground level. Using 1_ change the time base to select manual time base ranging, and lock Press LJ to open the SCOPE INPUTS menu. Press 1 1 to open the TRIGGER menu, and choose INPUT A SCREEN UPDATE FREE RUN AUTO RANGE...

St8097cgm

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 5-1. 4. Set the 5500A in operate (OPR). 5. Press 1 1 to start the calibration. 6. Wait until the display shows calibration status READY . 7. Press 1 1 to select the next calibration step, set the 5500A to the next calibration point, and start the calibration. Continue through all calibration points in Table 5-1. 8....

St8129cgm

Test Tool Input A-B to 5500A Normal Output for > 300V 2. Select the following test tool setup Press I_ to select auto ranging (AUTO in top of display). Press Li d to open the INPUT A MEASUREMENTS menu, and choose MEASURE on A VAC Press jKi to open the INPUT A MEASUREMENTS menu, and choose MEASURE on A VDC (VDC becomes main reading, VAC secondary reading) Press to open the INPUT B MEASUREMENTS menu, and choose INPUT B ON MEASURE on B VAC Press to open the INPUT B MEASUREMENTS menu,...

Supply

The LF-input (pin 42) is connected to a LF decade attenuator in voltage mode, or to a high impedance buffer for resistance and capacitance measurements. The LF decade attenuator consists of an amplifier with switchable external feedback resistors R131 to R136. Depending on the selected range the LF attenuation factor which will be set to 110-100-1000-10,000. The C-ASIC includes a LF pre-amplifier with switchable gain factors for the 1-2-5 steps. The HF component of the input signal is supplied...

Tv Signal Generator

Test Tool Input A to TV Signal Generator Inverted Figure 4-13. Test Tool Input A to TV Signal Generator Inverted 8. Select the following test tool setup Press LJ to open the SCOPE INPUTS menu. Press 1 1 to open the TRIGGER menu and choose VIDEO on A The VIDEO TRIGGER sub-menu is shown now. From the VIDEO TRIGGER menu choose SYSTEM NTSC or PAL or SECAM or PALplus LINE SELECT Using ( 11_J set the Input A sensitivity to 200 mV div. Using (_ select 20 s div. 9. Using OO select the line...

Warning

Dangerous voltages will be present on the calibration source and connecting cables during the following steps. Ensure that the calibrator is in standby mode before making any connection between the calibrator and the test tool. Proceed as follows to test the Input A and B AC Voltage accuracy 1. Connect the test tool to the 5500A as for the previous test (see Figure 4-5). 2. Select the following test tool setup Press H to select auto ranging (AUTO in top of display). Do not press . 1 anymore...

72 Starting Fault Finding

After each step, continue with the next step, unless stated otherwise. Power the test tool by the battery pack only, then by the power adapter only. 1. The test tool operates with the power adapter, but not with the battery only install a charged battery (VBAT > 4V), and check the connections between the battery and the test tool (X503, R504, R506, R507). 2. The test tool operates with the battery pack, but not with the power adapter only, and the battery pack is not charged by the test tool...

Of Contents

1 Safety 1.2 Safety 1.3 Caution and Warning 1.5 Impaired 1.6 General Safety 2.2 Dual Input 2.2.4 Advanced Scope 2.3 Dual Input 2.3.1 Input A and Input 2.3.2 Input 2.3.3 Advanced Meter 2.6 Service and 2.8 EMC 3 Circuit 3.2 Block 3.2.1 Channel A, Channel B Measurement 3.2.2 Trigger 3.2.3 Digital 3.2.4 Power 3.2.5 Start-up Sequence, Operating 3.3 Detailed Circuit 3.3.1 Power 3.3.2 Channel A - Channel B Measurement 3.3.3 Trigger 3.3.4 Digital 4 Performance 4.2 Equipment Required For 4.3 How To 4.4...

741 Test Tool Completely Dead

Keep the keys - D pressed, and turn the test tool on again. This will start up the mask software. If you still hear no beep, continue at step 2. If you hear a weak beep now, continue at Section 7.4.2. 2. Check the Keyboard ROW1 line (MS433 next to X452) for a 100 kHz square wave. If not correct, continue at step 3. If correct, the mask software runs, but the buzzer circuit does not function. Check the buzzer function (Section 7.5.10), and then continue at Section 7.4.2....

753 Slow ADC

BATCUR N501 pin 77 , must be 1.63 6.7 x IBATP Volt. If not correct, replace N501. Measure IBATP on X503 pin 3 N501 pin 9 IBATP senses the battery current. 2. BATVOLT N501 pin 78 , must be 0.67 x VBAT-3.27 Volt. If not correct, replace N501. Measure VBAT on TP504 N501 pin 3 VBAT senses battery the voltage. 3. BATTEMP N501 pin 79 , must be TEMP - IBATP Volt. If not correct, replace N501. Measure TEMP on N501 pin 5 X503 pin 6 TEMP senses the battery temperature. Measure IBATP on X503 pin 3 N501...

627Removing the Keypad and Keypad Foil

Referring to Figure 6-1, use the following procedure to remove the keypad and the keypad foil. 1. Remove the display assembly see Section 6.2.6 . 2. Remove the keypad foil. Notice the four keypad foil positioning pins in the top case. To avoid contaminating the keypad contacts, and the keypad foil contacts with oil from your fingers, do not touch the contacts or wear gloves . Contaminated contacts may not cause immediate instrument failure in controlled environments. Failures typically show up...

74 Starting with a Dead Test Tool

If the test tool cannot be turned on, when powered by a charged battery pack, or by the power adapter, follow the steps below to locate the fault. 1. Connect a power adapter and a charged battery pack. 2. Turn the test tool on and listen if you hear a beep. a. If you hear no beep, continue at 7.4.1 Test Tool Completely Dead. b. If you hear a weak beep, continue at 7.4.2 Test Tool Software Does not Run. c. If you hear a normal beep, the software runs, but obviously the test tool is not...

10 Mq

To protect the current source from being damaged by a voltage applied to the input, a PTC resistor R172 and a protection circuit are provided See Section 3.3.3 Current Source . During measuring, input voltage measurements, gain measurements, and zero measurements are done. As a result, the voltage supplied to the ADC is a multiplexed zero, reference, -reference, input voltage signal. Capacitance Measurements Channel A The capacitance measurement is based on the equation C x dV I x dt. The...

Tasic Oq0257

Reference Voltage Section The output of an amplifier in the P-ASIC supplies a current to the 1.23V reference source V301 via R307. The 3.3V REFPWM2 voltage is used as reference for the PWMB outputs of the D-ASIC on the Digital part. The 1.23V REFP voltage is used as main reference source for the reference circuit. This circuit consists of four amplifiers in the T-ASIC, external gain resistors, and filter capacitors. Amplifier 1 and connected resistors supply the REFPWM1 reference...

Vchdrive Vchdrive 13v

Block Diagram Flyback Converter

V506 OFF V506 ON When the test tool is not turned on, the Fly Back Converter does not run. In this situation, the 3V3GAR voltage for the D-ASIC, the FlashROM, and the RAM is supplied via transistor V569. The voltage is controlled by the VGARDRV signal supplied by the P-ASIC pin 69 . The current sense voltage across R580 is supplied to pin 70 VGARCURR . The voltage 3V3GAR is sensed on pin 66 for regulation. The internal regulator in the P-ASIC regulates the 3V3GAR voltage, and limits the...

8

Amplifier 3 and 4 and connected resistors supply the REFADCT and REFADCB reference voltages for the ADC's. Both voltages directly influence the gain accuracy of the ADC's. The T-ASIC can select some of the reference voltages to be output to pin 8 REFATT . The REFATT voltage is used for internal calibration of the input A and B overall gain. The T-ASIC generates the TRACEROT signal, used by the C-ASIC's. Control signals TROTRST and TROTCLK are provided by the D-ASIC. The Channel A B AC DC relays...

List of Tables

Trace Disturbance lt 2-3. Multimeter Disturbance lt 3-1. Fluke 123 Main 3-2. Fluke 123 Operating 3-3. Voltage Ranges And Trace 3-4. Ohms Ranges, Trace Sensitivity, and 3-5. Capacitance Ranges, Current, and Pulse 3-6. D-ASIC PWM 4-1. Input A,B Frequency Measurement Accuracy 4-2. Volts DC Measurement Verification 4-3. Volts AC Measurement Verification 4-4. Input A and B AC Input Coupling Verification 4-5. Volts Peak Measurement Verification 4-6. Phase Measurement...