THS720: Difference between revisions

THS720 (view source)

Revision as of 05:36, 15 March 2023

46 bytes removed , 15 March 2023

+template, manuals

Peter

Bureaucrats, Interface administrators, Suppressors, Administrators

36,375

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-[[Image:Ths720std-comp.jpg|thumb|400px|right|Tektronix THS720 Std probe compensation]]
+{{Oscilloscope Sidebar
+|manufacturer=Tektronix
+|series=THS series scopes
+|model=THS720
+|summary=150 MHz 4-ch digital scope
+|image=Ths720std-comp.jpg
+|caption=Tektronix THS720
+|introduced=(?)
+|discontinued=(?)
+|manuals=
+'''THS710, 720'''
+* [[Media:070-9247-02.pdf|User 070-9247-02]]
+* [[Media:070-9246-03.pdf|Service 070-9246-03]]
+* [[Media:070-9245-00.pdf|Programmer 070-9245-00]]
+'''THS710, 720, 730'''
+* [[Media:070-9731-05.pdf|User 070-9731-05]]<br/><small>  Other versions: [[Media:070-9731-03.pdf|-03]] / [[Media:070-9752-01.pdf|-01]]</small>
+* [[Media:070-9741-01.pdf|Reference 070-9741-01]]<br/><small>  Other versions: [[Media:070-9741-00.pdf|-00]]</small>
+'''THS710A, 720A, 720P, 730A'''
+* [[Media:070-9731-05.pdf|User 070-9731-05]]
+* [[Media:070-9752-02.pdf|Service 070-9752-02]]<br/><small>  Other versions: [[Media:070-9752-01.pdf|-01]] / [[Media:070-9752-00.pdf|-00]]</small>
+* [[Media:070-9751-01.pdf|Programmer 070-9751-01]]
+* [[Media:070-9750-02.pdf|THS720A Component-level Information Package]]
+'''Other'''
+* [[Media:061-4241-00.pdf|THS720/THS730 Release Notes 061-4241-00]]
+* [[Media:THS7XXAPDiag.pdf|THS700 Schematics]]
+* [[Media:3MW-10566-6.pdf|Tektronix THS700 Series Product Brochure (2006)]]
+}}
 The '''Tektronix THS720''' is a portable 100 MHz, 500 MS/s (each channel) dual-channel digital oscilloscope with isolated inputs.
 There were two variants, the THS720 STD and the THS720A.
@@ Line 33: / Line 62: @@
 Note that the differential signal layout for channel 2 is not as good as channel 1
 since one side of channel 2 goes through 2 vias not found on channel 1.
-==Repair Issues==
-The service manual shows how to remove the calibration protection jumper.
-The DMM calibration step requires a good calibrator capable of doing 850 V<sub>DC</sub>
-and 600 V<sub>AC</sub> at 500 Hz.  Scope calibration is much simpler requiring only a
-square wave pulser and a DC voltage source.  Note that after a cal fail, there
-is an error log in a nearby menu indexed by power on count.
-When confronted by scope calibration failures that say "Cal error, DC balance"
-and there are persistent DC offsets that increase with the attenuator settings
-try replacing U45 and U46.  They are HP CNR201A analog optoisolators, now made
-by Avago as the HCNR201-300E.  They send a low pass filtered version of the
-input signal across the isolation barrier to give the DC levels that can not
-cross the high frequency transformer isolation barrier.
-The battery pack is, of course, custom.  It appears to be 4 C cell NiCd pack
-with the positive terminal moved to a ring around the bottom (most negative) cell.
-If you are not concerned with interchanging packs or using the separate charger, the
-cells can simply be soldered into the lower housing.
-See [[THS700]] for the manuals.
 ==Pictures==

THS720: Difference between revisions

THS720 (view source)

Revision as of 05:36, 15 March 2023

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