1656 & 1657 Battery Element Tester Owner’s Manual
STS Instruments Page 17 of 88
2.8 Regulatory Compliance
Parameter Specification Notes
2.9 Available Options
The following options may be specified at the time of order.
Part Number Description Notes
Programmable Logic Controller Interface,
Analog/Digital I/O and Relay Functions
RS232 Serial Interface Remote Control
RS485 Multi-drop Serial Interface Remote Control
Rear Panel High Voltage Probe Connections
The -TT1652 Test Input Trigger Mode changes the mode
of operation of the Test Trigger input on the 1656-PLC
and 1657-PLC battery element testers to operate like
the previous generation 1652 models.