- All of the functions of the 3157 main unit, except for powering on and off, can be controlled via the GP-IB interface.
- However, the ":START" command works in a state in which the momentary OUT settings are disabled even though the momentary OUT settings have been set.
- The beeper sound can be turned on and off.
- The unit can be reset.
- IEEE 488.2-1987 standard (essential) commands can be used.