Figure 3

Time frame and heartbeat frame structure in continuous and triggered mode. HeartBeat (HB) triggers are issued in continuous and triggered modes to all upgraded detectors. Physics triggers can be sent to upgraded detectors in triggered mode and are sent to non-upgraded detectors in all modes. HBF and TF rates are programmable with the following nominal values; HBF: 1 every orbit, $\sim$89.4 ┬Ás/$\sim$10 kHz, TF: 1 TF every 128 HBFs/$\sim$11 ms/$\sim$100 Hz.