Digitimer Ltd - DS8R Operator’s Manual
Version 2.0
11
Digitimer Ltd.
Copyright ©2019
Specifications
Stimulus Output
Current Output: 0mA to 1000mA, incrementing in 0.1mA steps; accuracy ±2%. For example, a set
current of 100.0mA will be 100mA ± 2mA and a set current of 10mA will be 10mA ± 0.2mA
Pulse Duration: 50-2000µs, incrementing by 10µs steps; accuracy ±2%.
Interphase Interval: 1µs – 990µs in 10µs steps; accuracy ±2%.
Recovery Phase Ratio: 10%-100% in 1% steps; accuracy ±2%.
Pulse Mode: Monophasic or Biphasic
Pulse Polarity: Positive/Negative/Alternating.
Current Amplitude Limit Range: 10mA to 999mA
Compliance Limit: 400V
Energy Limit: 300mJ per pulse
Output Enable: On/Off Momentary action toggle switch
Connections: 4mm shrouded sockets (red and black) on 3/4" centres
Trigger
Maximum hardware trigger rate is 1,000 pps (1 kHz); ±1%
Maximum software (USB) trigger rate is 10pps (10Hz); ±1%
Front panel: Push button
Rear panel: 3.5mm mono jack socket for hand or foot switch (contact closure)
TRIGGER INPUT Electrical via Rear Panel BNC socket: Triggers: Logic signal (+3 to 15V) +ve edge, TTL
compatible. Minimum Pulse Duration is 5 microseconds.
SYNC OUTPUT Rear panel BNC, positive TTL pulse, 100µs ± 20% duration.
External Amplitude Control
Input range: 0V to +10V
Output range: 0mA to 1000mA*
* When the Current Amplitude Lock is enabled, the input voltage is rescales to this new maximum i.e.
if the Limit is set at 50mA, the input voltage input is re-scaled so that 0 to +10V gives 0 to 50mA.
Lag: 1ms (i.e. the DS8R will respond to amplitude changes at a maximum frequency of 1kHz)
Accuracy: ±1mA
