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General Radio 1217-A
Unit Pulser
General Radio 1217-A Unit Pulser

Available from 1954 to 1961

Catalog History
 Document Year Page
Catalog N 1954 172
Catalog O 1956 122
Catalog P 1959 122
Catalog Q 1961 115
(All manuals in PDF format unless noted otherwise)

The General Radio 1217-A Unit Pulser was introduced in Catalog N (1954) and remained available through Catalog Q (1961).

The 1217-A is a general-purpose unit type pulse generator. It uses internal or external drive to trigger the internally generated pulses. Below 100 Hz, trigger drive is derived for the power mains, at 100 Hz and above an internal oscillator is used.

Pulse duration is continuously adjustable from 0.2 μs to 60 ms in five ranges. Negative- and positive-going pulses are available from separate front panel binding posts. As a unit instrument, it requires an external power supply, the Type 1203-A is recommended.


  • Pulse Repetition Rate: 30 Hz, 60 Hz, synchronized to power line; 100 Hz to 100 kHz ±15%
  • Duration: Continuous in four ranges 0.2 μs to 60 ms Accuracy ±15% or 0.2 μs, whichever is greater
  • Rise Times: Rise time 0.05 μs
  • Fall Times: Fall time 0.15 μs with output terminals shunted by 15 pF and 1 MΩ
  • Open Circuit Output Voltage: 20 V
  • Output Impedance: Approximately 200 Ω for positive pulses and 1500 Ω for negative pulses