Tektronix 237-TRX-T User manual

Keithley Instruments

Model 237-TRX-T (CS-737)

28775 Aurora Road
Cleveland, Ohio 44139
1-800-833-9200

tek.com/keithley

Three-Slot Triaxial Tee Adapter Information

Description

The Model 237-TRX-T (CS-737) is a 3-slot plug triaxial to dual 3-lug socket tee adapter. You can use the
237-TRX-T adapter to connect multiple inputs to SMUs and electrometers. It also allows connection of external
feedback elements to electrometers.

Figure 1: Model 237-TRX-T (CS-737) 3-Slot Triaxial Tee Adapter

To maintain maximum insulation resistance, keep the connectors free of contaminants (such as dirt
or oil). If the connections become contaminated, clean them thoroughly with methanol. Allow them to
dry completely before use.

Characteristics

Working voltage

Maximum working current

Operating environment

Contact resistance

Insulation resistance

Materials

600 V
1300 V

1 A

0 °C to 50 °C, up to 70% relative humidity at ≤35 °C

< 0.5 Ω

15

10
relative humidity)

 Body: Brass with nontarnish finish and Teflon
 Contacts: Hardened beryllium copper

center conductor to inner shield

PEAK

center conductor and inner shield to outer shell

PEAK

PEAK

Ω, center conductor to inner shield (500 V test voltage, 23 °C at < 40%

®

insulation

PA-305 Rev. D September 2022

*PPA-305D*

1

Model 237-TRX-T (CS-737) Three-Slot Triaxial Tee Adapter Information

he dimensions are shown in the following figure.

T

Figure 2: 237-TRX-T (CS-737) adapter dimensions

The schematic of the 237-TRX-T is shown in the following figure.

Figure 3: 237-TRX-T (CS-737) schematic

The outer shell of the triaxial connector is for protection from voltage on the center and inner
shield conductors. Make sure the outer shell is always connected to earth ground or a
properly grounded chassis.

Never touch or change the connections when power is applied to the adapter. Always turn off
test system power and discharge all capacitors before connecting or disconnecting the
adapter.

To prevent voltages from being exposed or connections from shorting together, make sure
both ends of the adapter are properly connected before applying voltage.

Failure to do so may result in equipment damage, personal injury, or even death due to
electric shock.

2 PA-305 Rev. D September 2022