Tektronix 1503c Service Manual
Download TEKTRONIX 1503C SM service manual & repair info for electronics experts Service manuals, schematics, eproms for electrical technicians This site helps you to.
Zoobs72 wrote: I have a Tektronix 1502 TDR cable tester w/out the battery pack. Can anyone tell me if there is a way to use an external power source to get this thing working? Or where to find a working battery pack?
Thanks in advance zoobs72@.Yes, if it is like the 1503. Here's an adapter I made to get mine running: bbb N NN N bbb N = nut = threaded rod bbb = bananna plug The vertical lines represent plates - the one on the left is made from aluminum cut to fit into the recess on the back of the TDR The plate on the right was made from plexiglass. It was cut a bit smaller than the battery cavity. The bananna plugs mount through it. The whole assembly slides into the place where the battery goes.
Dec 26, 2003 - Tektronix built the 1502, and the 1503 long distance version. The 1999 1502B Service Manual is available from tektronix. ServiceManuals.net carries service manuals for many different products, including the TEKTRONIX 1503C SERVICE MANUAL. Visit us online for more information or to download service manuals today.
A 12 volt DC power supply plugs into a jack on the aluminum plate. You need a supply capable of about 500 ma. Wires connect from the jack to the bananna plugs.
All that was done so that I did not need to modify the TDR. To determine polarity: remove the TDR case. Connect a meter to the bananna jacks where the battery plugs in. Attempt to power the thing on from AC power - NOT from your power supply, which is NOT connected at this point. A pulse will appear across the bananna jacks - note the polarity. Repeat numerous times until you are sure of the polarity.
Whichever jack goes + when attempting to power up that way is the positive terminal. For my power supply, I used a 12 volt DC wall wart.
I installed a diode and a 4700 uf 35 v electrolytic in the space between the plates in the adapter. The diode is to protect against plugging in a wall wart with the opposite polarity, and 'backfeeding' the wall wart. (The TDR tries to put about 17 volts across the bananna jacks to charge the battery.) The cap helps to keep the voltage at 12 volts. All the above applies to the 1503. I'll bet the 1502 is similar, but I do not.know.
for sure. The way I figured this out was by attempting to diagnose what was 'wrong' with my 1503. Turns out nothing was wrong - the thing requires a 12 volt battery, even though it has a line cord! Drove me round the bend to figure that out, because I had no operators/service/instruction manual or schematic. And had never seen a 1503.
Got mine for $10.00 at a garage sale, and it works great. If you want, e-mail me and I'll send you pictures of the adapter I made. The 1502 and 1503 power supplies, CRT and chart recorder circuitry are identical. The sampling systems are totally different. The 1502/3 battery packs have always been a problem. The owners tended to keep the TDRs plugged in all the time and then expected them to work just fine on battery in the field.
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I specialized in those instruments in the OKC service center and had only one customer (Southwestern Bell in Edmond, OK) who did it right and figured it out on his own. He didn't charge the battery until the battery meter was near the 'death zone'. Then he gave it an overnight charge and didn't recharge until the meter indicated a low battery. He never had to replace his battery pack in the five years I knew him while other customers had to replace their packs at least annually if they couldn't get a drastic multi-cycle discharge/charge routine to rememorize their packs.
The two biggest killers of the 1502: (1) connecting the BNC to a live circuit and (2) not discharging long coax cables before connecting to the BNC. I remember in 1980 when the sampling bridge was $40 and the TD was $120. Seemed expensive then, but don't you wish for those prices now!
Tektronix 1503C Level Meter Manufacturer Model 1503C Date Category Group Description Metallic Time-Domain Reflectometer Information The Metallic-cable Time-Domain Reflectometer (MTDR) is a cable test instrument that uses radar principles to determine the electrical characteristics of metallic cables. The generates a half-sine wave signal, applies it to the cable under test, and detects and processes the reflected voltage waveform. These reflections are displayed in the liquid crystal display (LCD), where distance measurements may be made using a cursor technique. Impedance information may be obtained through interpreting waveform amplitude. The waveform may be temporarily stored within the and recalled or may be printed using the optional dot matrix strip chart recorder, which installs into the front-panel Option Port. These manuals are available for the above equipment. Manual Type Service Manual Pages 306 Size 8.68 Mbytes (9097304 Bytes) Language english Revision Manual-ID/Number 070-7170-05 Date Quality Electronic document, no scan, very well readable.
Upload date 25 December 2017 MD5 41aca3d4ef57d532e4e2c9719116f06e Downloads 57 since 25 December 2017 Information General Safety Summary. Service Safety Summary. General Information. Installation and Repacking. Operating Instructions Operating Instructions. Preparing to Use the.
Front-Panel Controls. Menu Selections. Test Preparations. Cable Test Procedure. Additional Features (Menu Selected).
Operator Performance Checks Operator Performance Checks. Specifications Specifications. Electrical Characteristics. Environmental Characteristics. Physical Characteristics.
Options and Options and. Option 04: YT–1 Chart Recorder. Option 05: Metric Default. Option 06: EthernetR.
Option 07: YT–1S Chart Recorder. Option 08: Token Ring Adapter. Option 09: Universal Service Ordering Code. Option 10: Token Ring. Power Cord Options. Circuit Descriptions Circuit Descriptions. Processor System.
Option Port. Video Processor. Pulse Generator/Sampler. Front Panel. Display Module.
Calibration and Adjustments Calibration. Calibration Performance Check. Display Module Check. Front Panel Check.
Horizontal Scale (Timebase) Check. Vertical Position (Offset) Check. Noise Check.
Impedance Check. Offset/Gain Check. RAM/ROM Check. Pulse Balance Check. Pulse Width Check. Auto Pulse Select Check. Jitter Check.
Aberrations Check. Pulse Amplitude Check. Option 04/07: YT-1/YT-1S Chart Recorder Check. Option 05: Metric Default Check. Option 06: EthernetR Adapter Checks. Adjustment Procedures. Visual Inspection.
Checks and Adjustments. Main Board '12 VDC Check and Adjust. LCD Check and Adjustment. Pulser/Sampler Voltage Check. Sampling Efficiency Adjustment. 1st Blow-By Compensation Adjustment.
Output Impedance Check. Option 06: EthernetR Adapter Adjustments. After Adjustments are Completed. Maintenance Maintenance.
Preventive Maintenance. Part Removal and Replacement. Control Panel Installation. Installing the Case Cover Over the Chassis.
Tektronix 1503c Service Manual
Replaceable Electrical Parts Replaceable Electrical Parts. Diagrams Diagrams. Replaceable Mechanical Parts Replaceable Mechanical Parts.
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