This small free-standing instrument has been designed for control of normal repetitive stimulation as well as for defining the Effective Refractory Period using a second, delayed pulse. This unit is especially useful as a frequency generator (as a TTL trigger source) for use with our DS2A, DS3 and DS7A isolated stimulators which have their own pulse duration controls. The basic features of it's predecessor the DG2 Trigger Generator have been extended to allow trains of pulses to be generated in response to input signals from other devices.




System Features

  • Compact, free-standing, battery powered Train/Delay Generator
  • Various output pulse modes
  • Compatible with Stimulators DS2A and DS3


Technical Specifications

Input Connector: 
BNC socket
Input Levels: 
TTL high (>1.5V),
TTL low (<0.8V)
Input Polarity: Active High (GATE/TRAIN) and Positive edge (SINGLE) or Active Low and Negative edge by Internal Jumper Input/Output signal:
Positive going, 200µs pulse, TTL compatible pulse
(5V amplitude)
Internal Jumper: 
Enable “x10” - giving a
100ms-120s total range
Frequency Total range: 
10 ms - 12 seconds in three overlapping ranges
Frequency Multiplier:
x0.01; x0.1 ;x1
Delay Total range:
1 ms - 1200 ms in three overlapping ranges
Delay Multiplier:
x0.01; x0.1; x1; x10; x100
Battery life:
Approximately 250 Hours with Ever Ready 6LF22 or Duracell MN1604
±1% at '1' and '12' marks,
±5% at intermediate marks
Single turn control marked
1 - 12s with intermediate integer panel marks
490 grams with battery fitted
188 x 110 x 60 mm (w h d)

Please note: Important! This product is for research applications only. Not a medical device as defined in EU directive 93/42/EEC. Not designed or intended to be used for diagnosis or treatment of disease.