Calibration
6–24
1502C MTDR Service Manual
Adjustment Procedures
Equipment Performance Required Example or Tek P/N
Digital Multimeter Range: 0 to 200 VDC DM501A or equivalent*
Ohmmeter Resolution to 0.01
W
DM501A or equivalent*
Variable AC Source with power meter GenRad W10MT3W or equiv.
Variable DC Power Supply 0 to 14 VDC, 3 A
3-foot Coaxial Cable 50
W
012–1350–00
* must be plugged into power mainframe
Metric default timing is made by moving a jumper on the back of the Front Panel
Board (see Maintenance chapter of this manual). To make the calibration easier, this
jumper will be moved to the standard timing position during calibration, then moved
back to the metric position when calibration is completed.
On early instruments, there is an adjustment on the Main Board used for timebase
compensation, identified as R2034. Because of a slight crosstalk effect between
circuits, measurements of a certain length cable would show a small glitch. This
adjustment eliminated the problem and subsequent improvements in circuit board
design eliminated the need for the adjustment. If your instrument has this
adjustment, it has been set at the factory and requires no further attention.
Driver/Sampler Board
Power Supply Module
Power Supply Board
Main Board
Figure 6–40: Circuit Board Locations in the Instrument
Equipment Required
Metric Instruments
Before Starting
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
To Next Page
Loading...
Need help?
General
