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Summary of Contents for Polar Instruments T1000A
- Page 1 Polar Instruments Ltd. T1000A Garenne Park St. Sampson SERVICE Guernsey Channel Islands MANUAL GY2 4AF ENGLAND Fax: +44 (0)1481 52476 MAN158–9604...
- Page 3 INSTRUMENTS LTD and not having been altered in any way or subject to misuse, negligence or damage, and not having been repaired or attempted to be repaired by any other than POLAR INSTRUMENTS LTD or its authorized distributors. EXCEPT FOR THE FOREGOING EXPRESS WARRANTY OF...
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Page 4: Declarations
This product is in conformity with the protection requirements of EC Council Directive 89/336/EEC on the approximation of the laws of the Member States relating to electromagnetic compatibility. A declaration of conformity with the requirements of the Directive has been signed by POLAR INSTRUMENTS (UK) LTD 11 College Place London Road Southampton... -
Page 5: Safety
T1000A SERVICE MANUAL SAFETY WARNING The service instructions contained in this manual are for use by qualified electronic service personnel only. WARNING The LIVE and NEUTRAL lines on this unit are BOTH fused. When the unit is connected to its supply, the opening of covers or removal of panels is likely to expose dangerous voltages. -
Page 6: Operation
The unit is designed for use indoors in an electrical workshop environment at a stable work station comprising a bench or similar work surface. Use only the accessories (e.g. test probes and clips) provided by Polar Instruments. The instrument must be maintained and repaired by a skilled electronics technician in accordance with the manufacturer’s instructions. -
Page 7: Specifications
T1000A SERVICE MANUAL SPECIFICATIONS ASA Test Ranges Open Circuit Voltage Short Circuit Current Junction 500µA Logic 150mA Hi-Cap (1Hz fixed) 150mA Low-Cap (2kHz fixed) 20µA ASA Test Frequencies 95Hz Medium 500Hz High 2kHz Curve Tracing Collector drive Peak Voltage Peak Current... -
Page 8: Environmental Operating Conditions
160mAT SYMBOLS REFER TO MANUAL These sockets are for connecting only Polar Instruments probes and connectors for use as described in the Operator Manual. To prevent damage to this product and to ensure its safe use observe the specifications given in this manual when connecting to terminals marked with this symbol. -
Page 9: Accessories
T1000A SERVICE MANUAL ACCESSORIES Standard Accessories Oscilloscope cable assembly ACC150 Probe set MMP159 Test clip set ACC110(Red) ACC111(Black) Operator manual MAN148... -
Page 10: Table Of Contents
PERFORMANCE CHECK ..................1-1 Equipment required ....................1-1 Procedure......................1-1 SECTION 2 – CIRCUIT DESCRIPTION ..............2-1 T1000A CIRCUIT DESCRIPTION ................2-1 Sine Generator ...................... 2-1 SINE Amplifier and Power Supply ................. 2-2 SINE amplifier ....................2-2 Power Supply....................2-2 Switching ....................... - Page 11 T1000A SERVICE MANUAL SECTION 4 – LINE VOLTAGE AND FUSE CHANGING ..........4-1 LINE VOLTAGE SELECTION AND FUSE CHANGING ........... 4-1 SECTION 5 – FAULT DIAGNOSIS ................5-1 TROUBLESHOOTING HINTS .................. 5-1 SECTION 6 – MAINTENANCE AND CLEANING............6-1 Cleaning ........................ 6-1 Technical Support....................
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Page 12: Section 1 - Performance Check
Connect to Channel B socket and confirm a similar display. Set the T1000A to LOW range and check for a similar display from both sockets. Set the T1000A to MED range Check that the waveform at A and B is now approximately 8 divisions pk to pk Set the oscilloscope to 0.1mS/div. - Page 13 Set the T1000A STEP AMPLITUDE to fully CW and + steps of Volts. Check for a +ve going step waveform of about 1.5 divisions total amplitude. Set the oscilloscope to XY mode and 0.1V/div. and connect the T1000A by its oscilloscope cable (red to X).
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Page 14: Section 2 - Circuit Description
R11. Note that the AND gates are turned off in ASA to stop the step generator. The output is inverted by U202A and drives the output through buffer U202B. Switch S9 (refer to T1000A Switching schematic) selects the polarity of the drive to the buffer. SINE Amplifier and Power Supply... -
Page 15: Sine Amplifier
Note: The schematic diagram is arranged to correspond exactly with the circuit board layout as an aid to troubleshooting. The mechanical switch bank is wired to interlock many of the T1000A functions. U200B is a simple logic inverter of the control signal “JR”. - Page 16 CIRCUIT DESCRIPTION CMOS changeover switch U10 is located in the virtual earth of the output op amps. It switches between channels at a rate dependant on the ALT_CLK signal, which is once per cycle of sine wave or every two cycles depending on range. Position offset is added to the A signal at this point.
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Page 17: Section 3 - Dismantling Instructions
SECTION 3 – DISMANTLING INSTRUCTIONS DISMANTLING THE T1000A Removing the cover • Disconnect the power cord. • To remove the cover, undo the two screws at the rear and lift the rear of the cover first. Removing the circuit boards •... -
Page 18: Section 4 - Line Voltage And Fuse Changing
SECTION 4 – LINE VOLTAGE AND FUSE CHANGING WARNING: There are hazardous voltages inside the instrument when connected to its power supply. REMOVE THE POWER CORD before touching any part of the line input circuit. Note that high voltages may continue to be present for 2 minutes after power is removed until internal capacitors discharge. -
Page 19: Section 5 - Fault Diagnosis
SECTION 5 – FAULT DIAGNOSIS WARNING: Hazardous voltages are exposed on the PCB when the cover is removed. These procedures should only be performed by a technically qualified person aware of the hazards and taking all reasonable care. TROUBLESHOOTING HINTS •... -
Page 20: Section 6 - Maintenance And Cleaning
If it becomes necessary to repair the instrument, in the first instance contact the Polar Instruments distributor in your country. In case of difficulty contact Polar Instruments Ltd. at the address at the front of this manual. Do not send the... -
Page 21: Section 7 - Replacement Parts
Note: Parts marked with an asterisk (*) have been subject to modification in later instruments. Safety critical parts (listed in bold type) must be replaced with parts obtained from Polar Instruments Ltd or your Polar Instruments distributor to ensure continued safe operation. -
Page 22: Electrical Parts
T1000A SERVICE MANUAL ELECTRICAL PARTS Part Nº Quantity Description Circuit Reference CEA105 220µF Electrolytic C9, C10, C14, C15, C16, CEA113 22µF Electrolytic C5, C6 CEA117 2,200µF Electrolytic C7, C8 CVD101 0.1µF C11, C13 CVD102 0.01µF CVD106 82pF C225 CVD115 33pF... - Page 23 REPLACEMENT PARTS INDI01 Ferrite Bead IND107 10µH Inductor L100 LDD124 Crystal 2MHz LED115 Red LED D22, D23, D24, D25, D26, D27, D28, D29, D30, D31, LED122 Tri-Color LED D16, D18, D20 MAA123 Fuse Holder F1, F4 MAA123A Fuse Holder (no cover) MMP155 Clip MMP167...
- Page 24 T1000A SERVICE MANUAL RCF330R Resistor 330R 1/4W R5, R6, R16, R17, R30, R31 R70, R73, R77, R84, R85, R86, R87, R88, R89, R90, R91, R92, R93, R94, R302 RCF3K3 Resistor 1/4W R49, R50, R204, R205 RCF51K Resistor 1/4W R222 RCT100K...
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Page 25: Mechanical Parts
REPLACEMENT PARTS MECHANICAL PARTS Part Nº Quantity Description MCA138 Case Top MCA162 Front Moulding MCA164 Case Bottom (Drilled) MKB127 Knob Cap MKB128 Knob MKB129 Button caps MKB153 Power Switch Button MNS107 K30 x 6 Self Tap MNS117 M3 x 10 Pzd Screw MNS163 M3 x 12 Csk Head Screw MNS166... -
Page 26: Section 8 - Schematic Diagrams
SECTION 8 – SCHEMATIC DIAGRAMS...
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