The Model 323 has adjustments to compensate for many sensitive testing conditions. The response Speed control adjusts the speed/noise tradeoff of the AC response. The Drift/Spacing Null Adjustment minimizes the variation in zero offset voltage as the probe to test surface spacing changes.

The front panel has an easy to read 3½ digit LED display. The detected output voltage can be monitored through a 1:1 voltage monitor output and a switch selectable scale of 10:1 or 20:1 voltage monitor output.

Trek patented low impedance probes assure measurement accuracy essentially independent of probe-to-test-surface spacing, humidity conditions, and contamination such as airborne dust, toner, ions and chemicals.

Line Supply
Factory set for one of two ranges: 90 to 127 V AC or 180 to 250 V AC, at 48 to 63 Hz (specify when ordering).

Power Consumption
12 VA, maximum.  

Ground Receptacle
Banana jack.

AC Line Cord Receptacle
Standard three-prong line cord receptacle with integral fuse holder.

Operating Conditions Temperature
5 °C to 40 °C.

Relative Humidity
To 85%, noncondensing.

Dimensions
108 mm H x 223 mm W x 380 mm D
(4.25" H x 8.75" W x 15" D).

Weight
3.6 kg (8 lb).

Voltage Monitor Connector
BNC coaxial connector.