Train Delay Generator (DG2A)

Train Delay Generator (DG2A)

Designed for control of normal repetitive stimulation as well as for defining the Effective Refractory Period using a second, delayed pulse.

  • Trigger timing generator
  • Ideal for electrophysiology
  • Perfect match for DS2A and DS7A Stimulators
  • Internal battery

Item# Description U.S. List Price Quantity
65-0641 Train Delay Generator DG2A
65-0329 DS2A Isolated Stimulator, Constant Voltage
65-0550 DS3 Isolated Stimulator, Constant Current Output
65-0337 D121-11 19 Inch Rack Mounting Frame, holds 2 DS2A/ DS3/DG2
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The DG2A Train Delay Generator is an ideal instrument for electrophysiological recordings requiring pulsed stimulation of samples. It is especially useful for use with our DS2A Isolated Stimulator which has its own pulse width control.

The unit features Rate/Frequency control spanning 3 full decades, and selection of single or twin pulses with 3 decade control of the inter-pulse delay. A single shot button is fitted to supply pulses on demand (when the oscillator is off) or in addition to the repetitive stimuli (when the oscillator is on). The oscillator (frequency generator) can be switched to free-run, off, or on while the switch is held.

A SYNC output socket is available for triggering recording devices. The OUT output can be selected as either the non-delayed pulse, the delayed pulse, or both (twin) pulses.

The instrument is powered by an internal 9 volt battery (PP3 - 6R61 style), but can also be powered by an external calculator-style plug-in power supply (not supplied).

Specifications
Rate (Frequency) Total Range 0.1 to 100 Hz
Control Single turn (270°) control marked 1 to 10 Hz with intermediate integer panel marks
Accuracy ± 1% at '1' and '10' marks
± 5% at intermediate marks
Multiplier x1, x10, x100
Delay Total Range 1 to 1000 msec
Control Single turn (270°) control marked '1' to '10' ms with intermediate integer panel marks
Accuracy ± 1% at '1' and '10' marks
± 5% at intermediate marks
Multiplier x1, x10, x100
Train Control ON Rate oscillator free-running
OFF Rate oscillator disabled
ON Rate oscillator free-running while switch held
Single Single shot push button producing single or additional output pulse
Output Selector Delayed Single pulse delayed from sync pulse by delay setting
Twin Two pulses, one coincident with sync pulse and one delayed by delay setting
Non-Delayed Single pulse coincident with sync pulse
Output Positive going, 10 µsec pulse(s) of 5 V amplitude
Connectors Pair of 4 mm sockets on 3/4 in centers parallel with BNC socket
Sync Output Positive going, 10 µsec pulse of 5 V amplitude
Connectors Pair of 4 mm sockets on 3/4 in centers parallel with BNC socket
Power Control ON/OFF toggle; OFF is down
Consumption < 2mA
Internal Battery PP3 - (IEC-6R61) style, alkaline preferred
Battery Life 250 hrs with EverReady 6LF22 or Duracell MN1604
External 9 to 15 V 'calculator-style' power supply (not supplied)
absolute max. peak voltage = 26 V
supply does not have to be regulated or smoothed
Input Connector 3.5 mm mono jack socket; tip is positive
Dimensions
H x W x D
110 x 188 x 60 mm
(4.3 x 7.4 x 2.4 in)
Weight 490 g (17.3oz) with battery installed