Description
The Model BTC-1 Backup Tone Card from Siemens Industry, Inc. provides two tones for the MXLV System that can be selected by dipswitches. This card can be installed on top of the ACM-1 to provide backup of the two primary tones should the tone generator of the ACM-1 fail. The BTC-1 can also be installed on the OCC-1 Output Control Card module to provide a default tone when the low power riser fails and when the OCC-1 loses contact with the MMB.