Analytical instrument with switchable detection circuitry

An analytical instrument comprising:

• an ion detector configured to detect ions and to produce an ion signal characteristic of the detected ions;
• and
• detection circuitry comprising a first input configured to receive an ion signal from the ion detector, a filter configured to filter a received ion signal, and a first output;
• wherein the ion detector is configured to detect ions in a first mode of operation and to detect ions in a second mode of operation, wherein an ion signal produced by the ion detector in the first mode of operation is characteristic of a first property of the ions and an ion signal produced by the ion detector in the second mode of operation is characteristic of a second different property of the ions;
• and
• wherein the detection circuitry is configured such that:
• (i) an ion signal produced by the ion detector in the first mode of operation is provided to the first output without being filtered by the filter;
• and such that (ii) an ion signal produced by the ion detector in the second mode of operation is filtered by the filter before being provided to the first output.