COOKNELL ELECTRONICS LTD
VOLTAGE RAMP GENERATOR CRG3
INTRODUCTION
The ramp generator provides linear voltage ramps with three switch selectable rates having maximum
settings of 19.99, 199.9 and 1999 mV/sec. A 10-turn potentiometer monitored by a 3.1 digit DPM enables
intermediate settings from 5% off full scale to full scale to be obtained. The output, whose amplitude is
monitored by a front panel centre zero moving coil meter, can swing ±10V. It may be started at -10V, 0V or
+10V as desired. Ramp direction automatically reverses when the output attains full scale. Two front panel
push buttons enable the user to reverse the direction at any time in the cycle. A reset switch stops the
ramp and sets the output to the pre-set starting voltage. When this switch is set to the GO position, an
auxiliary output is available to initiate the timer. The unit is housed in a 2U (31") high 19" rack chassis and
required 100V to 255V ac mains. Alternatively the unit is available in portable form when it is fitted with a
rechargeable battery and ac mains powered internal battery charger.
RECALIBRATION
For units operated under normal laboratory conditions they will be expected to be still within their
specification limits after 12 months. A re-calibration at 12 month intervals is recommended so that any
small drifts can be trimmed out and assurance given that the performance will be satisfactory for a further
12 month period. Units, which are subject to “on-site” treatment, should be recalled at 6-month intervals
or immediately after any violent mistreatment (e.g. drop or float test).
SPECIFICATION
Output
Coarse
Fine
Rate Indicator
Accuracy
Amplitude
Amplitude Monitor
Connector
Switch selectable 19.99, 199.9 and 1999mV/sec.
10 turn potentiometer 5% - 100% of full scale.
3 ½ digit DPM.
±1% of range ±1 digit.
10V into 1kΩ
Centre zero moving coil meter.
BNC Coax.
Control
Reset/Pause/Go
Start Volts
Direction
Three-position switch.
Three position switch, +10V/0V/-10V
Two switch push buttons
Timer
Start
BNC 0V = GO, -ve otherwise.
Power
Dimensions
Weight
Mains
100V - 255V, 50 - 400Hz, 20VA max.
2U (31") high, 19" rack mounting
3.5kg
The rack mounted unit has OUTPUT and TIMER connectors duplicated on the rear panel.
Price
3165.00GBP
COOKNELL ELECTRONICS LTD, 17 CAMBRIDGE ROAD, GRANBY INDUSTRIAL ESTATE, WEYMOUTH, DORSET, DT4 9TJ, UK
Tel: +44 (0)1305 773744
E Mail: info@cooknell-electronics.co.uk
http://www.cooknell-electronics.co.uk
Nov ‘13
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