1. Option "I-1000" Clamp-on Current Transformer :
Extends AC current measurement capability to 1000 amps RMS. The 1000:1 ratio CT is 2% accurate from 50Hz to 400Hz.

2. Option "I-150" Clamp-on Current Transformer :
Extends AC current Measurement capability on the 2100 and 2101 to 150 amps RMS. The 1000:1 output ratio is 2% accurate from 50Hz to 400Hz. The unit accomodates up to 1/2" diameter conductors.

3. "R-4":
Rack Mount Adapters -For 19" Racks

4. "X-21" Load Extension Cord Option :
Approximately three feet in length for each half, this convenient adaptor cord plugs directly into a standard 115V AC power outlet and mates with the 2100 or 2101 via heavy duty banana jacks. Female half provides for quick and easy load connect or disconnect capability.

5. "2101-20mA":
For low current applications Option "20mA" provides a lower current range of 20mA, includes 200mA and 2.0A ranges; however, it deletes the higher 20 ampere range.

6. "GPIB-RS232C Interface":
For IEEE-488 (GPIB) capability the Option "1020A-IEEE" provides digital output of the display readings to a host controller via the GPIB.
Option "1020-RS232" provides RS232C interface to PC via a serial interface and also provides a printout of 2100 or 2101 measurements to a Centronix parallel printer.

1. "TL-4" IEEE-488 Interface Option:
Microprocessor based talk/listen GPIB interface. Allows full remote ranging capability, plus data output for V-A-W on all channels, plus an on-board integrator to provide continuous watthour computation and output.

2. "IOX" 11 Channel Simultaneous Analog Output Option:
Permits simultaneous monitoring of V-A-W for each phase plus three phase 3-wire and 4-wire total power. These proportionally scaled 0-5 VDC signals are availible at a 24 pin connector located on the rear panel. IOX is not compatible with Option "TL-4".

3. Option "I-1000" Clamp-on Current Transformer :
Extends AC current measurement capability to 1000 amps RMS. The 1000:1 ratio CT is 2% accurate from 50Hz to 400Hz.

4. Option "I-150" Clamp-on Current Transformer :
Extends AC current Measurement capability on the 2300 to 150 amps RMS. The 1000:1 output ratio is 2% accurate from 50Hz to 400Hz. The unit accomodates up to 1/2" diameter conductors.

5. "RX-7" Rack Mount Adaptor:
The "RX-7" Rack Mount Adapter provides rack mounting hardware for the 2300. The RX-7 accommodates the standard NEMA 19" rack cabinet dimensions.