Tektronix 7078-TRX-GND User manual

Keithley Instruments

Model 7078-TRX-GND

PA-293 Rev. D September 2022

1

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

tek.com/keithley

Three-Slot Triaxial Plug to BNC Adapter Information

Description

The Model 7078-TRX-GND (CS-712) is a triaxial plug to BNC socket adapter with the guard removed. You can
use it to connect BNC cables to equipment with three-lug triaxial connectors. The Model 7078-TRX-GND
(CS-712) does not have a through connection for the triaxial inner shell, which prevents hazardous voltages
from guard sources being present on the BNC shell.

Figure 1: Model 7078-TRX-GND (CS-712) Three-Slot Plug Triaxial to BNC Adapter

Figure 2: Model 7078-TRX-GND (CS-712) schem at ic

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.

*PPA-293D*

Model 7078-TRX-GND Three-Slot Triaxial Plug to BNC Adapter Information

Characteristics

Working voltage:

 600 V
 1300 V

center conductor to inner shield

PEAK

center conductor and inner shield to outer shell

PEAK

Maximum working current: 1 A peak
Operating environment: 0 °C to 50 °C, up to 70 percent relative humidity at ≤ 35 °C
Contact resistance: < 0.5 Ω

15

Insulation resistance: 10

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

relative humidity)
Material:

TM

 Body: Brass with nontarnish finish and Teflon

insulation

 Contacts: Hardened beryllium copper

Figure 3: 7078-TRX-GND (CS-712) adapter measurements

2 PA-293 Rev. D September 2022