090-15200-651SyncServer S650 with Timing I/O Module.
090-15200-652SyncServer S650 with Timing I/O Module and Rubidium oscillator upgrade.
090-15200-653SyncServer S650i model, which is an S650 without a GNSS receiver and includes one Timing I/O module.
090-15200-650M-100SyncServer S650 M-Code base configuration, without power supply (CFE), for military applications.
Confirm acceptability against your drawing before ordering.