With any SRAM-equipped controller, including the “onboard SRAM” JACE controllers like the JACE-6E and JACE-3E, there are two different ways to utilize SRAM. There is also a scenario in which you may elect not to make use of SRAM, even if the controller includes it standard (onboard).
| Battery-less JACE (with SRAM) | JACE with SRAM plus backup battery | JACE using only backup battery |
|---|---|---|
JACE-6E/JACE-3E (SRAM card unnecessary) |
JACE-6E/JACE-3E (SRAM card unnecessary) |
JACE-6E/JACE-3E or JACE-2/6 series |
| The “battery-less” controller was the original NiagaraAX implementation of SRAM. No backup battery (NiMH or otherwise) is attached to the JACE. For more details see Battery-less JACE scenarios. | Since 3.6.44 or later, an SRAM-equipped JACE can utilize both SRAM and an installed backup battery, like the NiMH battery pack shown above. For more details see SRAM plus battery scenarios. | Sometimes a station is a poor candidate for SRAM support. Disabling SRAM operation is best in this case, even if “onboard” SRAM. For related details, see Unsuitable station for SRAM support. |