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710 Quad 1-kV Bias Supply Specifications The Model 710 contains four identical bias supplies with independently adjustable voltage and polarity. The specifications apply to each of the four channels unless noted otherwise. PERFORMANCE POLARITY Positive or negative polarity, independently selectable for each channel by printed circuit board jumpers. OUTPUT VOLTAGE RANGE Front-panel switch selectable as 0 to 100 V, or 0 to 1 kV.OUTPUT CURRENT RANGE Internally limited to 20 µA on each output. OUTPUT VOLTAGE ACCURACY ±0.25% of full scale.VOLTAGE CONTROL RESOLUTION 0.5 V on 1000-V range, 0.05 V on the 100-V range. OUTPUT VOLTAGE REGULATION <0.001% or 1 mV (whichever is greater).OUTPUT VOLTAGE TEMPERATURE SENSITIVITY <30 ppm/°C for 0 to 50°C. OUTPUT VOLTAGE LONG-TERM INSTABILITY <0.001%/24 hours.OUTPUT RIPPLE <2 mV peak-to-peak, 5 Hz to 100 MHz. OUTPUT RISE TIME Nominally 100 ms.DISPLAY RANGES 0 to 100 V in 0.1-V steps on the 100-V range, 0 to 1000 V in 1-V steps on the 1000-V range, and 0 to 19.99 µA in 0.01-µA steps for current. DISPLAY NONLINEARITY £±0.05% of full scale for voltage from 0 to 100 V or from 0 to1 kV, and current from 0 to 10 µA. DISPLAY UNCERTAINTY ±1/2 least significant digit. DISPLAY TEMPERATURE SENSITIVITY £50 ppm/°C for 0 to 50°C.CONTROLS AND INDICATORS MASTER ON/OFF (common to all channels) Front-panel, two-position, toggle switch enables or disables all four supplies. OVERLOAD RESET (common to all channels) Front-panel, momentary, push-button switch that clears the overload shutdown on any channel after a current overload. (See OVL LED.)VOLTS/CURRENT (common to all channels) Front-panel, eight-position, rotary switch selects the parameter to be read from the display. Either the output voltage or the output current of each of the four supplies can be selected. DISPLAY (common to all channels) Front-panel, 3-1/2-digit, LED display monitors either the voltage or current of the supply selected by the VOLTS/CURRENT rotary switch.POLARITY JUMPER (1 per channel) Internal, printed circuit board jumper selects either positive or negative output polarity. POS/NEG LEDs (2 per channel) Front-panel, green LEDs indicate the polarity of the HV OUTPUT. POS is on for positive, or NEG is on for negative output polarity.RANGE (1 per channel) Front-panel, three-position, locking toggle switch selects a full-range output voltage of 0 to 100 V or 0 to 1 kV, or disables the output. ON LED (1 per channel) Front-panel, red LED is on if the supply is enabled and has not experienced a vacuum shutdown or current overload.VOLTAGE CONTROL (1 per channel) Front-panel, 10-turn, precision potentiometer with locking, graduated dial provides a continuously variable output voltage from 0 to 100 V or from 0 to 1 kV, depending upon the VOLTAGE RANGE setting. (Also see VOLTAGE CONTROL JUMPER.) VOLTAGE CONTROL JUMPER (1 per channel) Internal, printed circuit board jumper selects either the REMOTE INPUT or the front-panel VOLTAGE CONTROL potentiometer as the source that sets the output voltage. Normally set to the VOLTAGE CONTROL potentiometer position.OVL LED (1 per channel) Front-panel, yellow LED is on if the supply has been shut down because the current demanded from the HV OUTPUT exceeded 20 µA. (See OVERLOAD RESET.) VACUUM SHUTDOWN LED (common to all channels) Front-panel, yellow LED is on if a vacuum shutdown has been triggered. (See VACUUM SHUTDOWN input.)INPUTS VACUUM SHUTDOWN (common to all channels) Rear-panel, BNC connector disables all supplies and turns on the VACUUM SHUTDOWN LED if a low TTL signal or a resistance to ground less than 75 W is applied. The supplies are enabled and the VACUUM SHUTDOWN LED turns off when a high TTL signal or a resistance to ground greater than 5 kW is connected to this input. Used with the trip level on a vacuum gauge to turn off the detector bias voltage when vacuum is lost in the chamber containing the detectors. REMOTE INPUT (1 per channel) Rear-panel, BNC connector accepts a 0 to +10-V input that controls the output voltage from 0 to full scale. Active only when the REMOTE INPUT is selected by the VOLTAGE CONTROL JUMPER.OUTPUTS HV OUTPUT (1 per channel) Rear-panel, SHV connector supplies the 0 to ±100 V or 0 to ±1 kV bias voltage output. OVL/SHDN ALARM (common to all channels) Rear-panel, BNC connector provides an open-collector, active-low, TTL-compatible signal if a vacuum shutdown or an overcurrent shutdown on any of the four channels has occurred. An external pull-up resistor to +5 V is required. OVL/SHDN ALARM outputs from other Model 710 modules can be connected in parallel to produce a common alarm to signal a detector failure or a vacuum failure in the experiment.ELECTRICAL AND MECHANICAL POWER REQUIRED The Model 710 derives its power from a NIM bin supplying ±24 V and ±12 V, such as the ORTEC Model 4001A/4002A NIM Bin/Power Supply. The power required is +24 V at 90 mA, +12 V at 390 mA, –12 V at 360 mA, and –24 V at 90 mA. WEIGHTNet 1.4 kg (3.2 lb). Shipping 2.9 kg (6.4 lb) DIMENSIONS Standard double-width NIM module, 6.90 X 22.13 cm (2.70 X 8.714 in.) front panel per DOE/ER-0457T. ORDERING INFORMATION
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