ELECTRICAL SPECIFICATION

UNIT TYPE

ANODE VOLTAGE

FOCUS VOLTAGE

HEATER
(common to anode)

   IG005PAA300

+25V to +5 kV at 100 uA

+25V to +5 kV at 100 uA

0.8 to 2.5 Amps at 8V

   IG010PAA300

+50V to +10 kV AT 100 uA

+50V to +10 kV AT 100 uA

0.8 to 2.5 Amps at 8V

   IG020PAA300

+100V to +20 kV at 100 uA

+100V to +20 kV at 100 uA

0.8 to 2.5 Amps at 8V

Input voltage:

24V d.c. ±1V at 1.8 amp maximum.

Output voltages:

Anode, Focus & Heater (heater voltage floats on anode potential).

Ripple:

Anode & Focus 0.1% peak to peak, Heater 1V peak to peak max.

Control (all outputs):

0 to +10 volt gives 0 to maximum, ±5%

Load regulation:

Better than 1% for a 10% change in resistance.

Line regulation:

Better than 1% for 1V change in input voltage.

Output accuracy:

Better than ±5% of full scale (all outputs).

Inhibit:

Heater:
+24V or O/C - Inhibit
<+1.5V - Heater on
Anode & Focus:
+24V or O/C - Inhibit
 <+1.5V - Outputs slow rise to maximum

Monitors:

Anode voltage   0 to +5V represents 0 to max. kV.
Focus voltage   0 to +5V represents 0 to max. kV.
Anode current   0 to +5V represents 0 to 100 uA (beam current).
Heater current   0 to +5V represents 0 to 2.5A.

Accuracy of readbacks:

Better than ±5%.

Temperature co-efficient:

<300 ppm/°C (Anode & focus), 1% per °C (Heater).

Operating Temperature:

0 °C to +45 °C.

Mechanical Specification

Size:

215 mm x 200 mm x 47 mm.

Outputs:

By flying lead, length 1 meter.

Input Connector:

12 pin Molex.