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roughly the size and weight of the [[560-series_scopes|560 series]]. | roughly the size and weight of the [[560-series_scopes|560 series]]. | ||
Except for the CRT and the rectifiers in the HV power supply, the 647 is all solid state. | |||
The 647 was promoted as “ruggedized” with an extended operating temperature range, | 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. | X-Y mode requires the use of the external horizontal input in an 11 series time base. | ||
The 647 uses the [[T6470]] CRT. | 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== | ==Pictures== |