647: Difference between revisions

647 (view source)

362 bytes added , 31 August 2014

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 roughly the size and weight of the [[560-series_scopes|560 series]].
-The system is nearly all solid state,
+Except for the CRT and the rectifiers in the HV power supply, the 647 is all solid state.
-with the exception of the three [[5642]] HV rectifier tubes used in the CRT circuit.
 The 647 was promoted as “ruggedized” with an  extended operating temperature range,
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 X-Y mode requires the use of the external horizontal input in an 11 series time base.
 The 647 uses the [[T6470]] CRT.
+The total accelerating voltage is 14kV.
+The HV power supply contains five [[5642]] rectifier tubes:
+three for the +11.2kV CRT anode supply,
+one for the -2.2kV CRT cathode,
+and one for the -2.2 kV CRT grid/blanking.
+Electromagnetic [[trace rotation]] is used in the 647.
+The calibrator in the 647 is based on a 4kHz crystal,
+which is divided down to 1kHz.
+Its specified tolerance is +/- 1Hz.
 ==Pictures==