Method for functional testing of a receive chain of a magnetic resonance tomography scanner, wherein the magnetic resonance tomography scanner has a receiver and a transmitter, wherein the transmitter is designed to generate and output a first two-tone signal with a first frequency f1 and a second frequency f2 and a level p, wherein the first frequency f1, the second frequency f2 and an odd-order or higher-order intermodulation product of the first frequency f1 and the second frequency f2 lie in a receiving range of the receiver, wherein the first frequency f1 is not equal to the second frequency f2, and a level of the transmitted two-tone signal lies in a level range in which the received two-tone signal at the receiver lies in a linear range of the receiver and the odd-order intermodulation product lies above a noise level of the receiver, wherein the transmitter is designed to transmit a second two-tone signal, which differs from the first two-tone signal in level, wherein the magnetic resonance tomography scanner has an analysis facility, which is designed to determine a level of the intermodulation product in an input signal of the receiver, wherein the magnetic resonance tomography scanner has a signal loop, which is designed to couple the first and the second two-tone signal of the transmitter into a component of a receive path of the receiver, wherein the method has the steps: Outputting a first two-tone signal at a first level by way of the transmitter; Acquiring a first test signal with a first intermodulation product via the signal loop by way of the analysis facility; Outputting a second two-tone signal at a second level by way of the transmitter, wherein the first two-tone signal differs from the first two-tone signal in level; Acquiring a second test signal with a second intermodulation product via the signal loop by way of the analysis facility; Ascertaining a test value as a function of the level of the first two-tone signal, the level of the second two-tone signal, a level of the first intermodulation product and a level of the second intermodulation product; Comparing the test value with a reference value by way of the analysis facility; Outputting a signal to a controller of the magnetic resonance tomography scanner or a display for an operator, as a function of the comparison. and a level of the transmitted two-tone signal lies in a level range in which the received two-tone signal at the receiver lies in a linear range of the receiver and the odd-order intermodulation product lies above a noise level of the receiver, wherein the transmitter is designed to transmit a second two-tone signal, which differs from the first two-tone signal in level, wherein the magnetic resonance tomography scanner has an analysis facility, which is designed to determine a level of the intermodulation product in an input signal of the receiver, wherein the magnetic resonance tomography scanner has a signal loop, which is designed to couple the first and the second two-tone signal of the transmitter into a component of a receive path of the receiver, wherein the method has the steps: Outputting a first two-tone signal at a first level by way of the transmitter; Acquiring a first test signal with a first intermodulation product via the signal loop by way of the analysis facility; Outputting a second two-tone signal at a second level by way of the transmitter, wherein the first two-tone signal differs from the first two-tone signal in level; Acquiring a second test signal with a second intermodulation product via the signal loop by way of the analysis facility; Ascertaining a test value as a function of the level of the first two-tone signal, the level of the second two-tone signal, a level of the first intermodulation product and a level of the second intermodulation product; Comparing the test value with a reference value by way of the analysis facility; Outputting a signal to a controller of the magnetic resonance tomography scanner or a display for an operator, as a function of the comparison. Outputting a first two-tone signal at a first level by way of the transmitter; Acquiring a first test signal with a first intermodulation product via the signal loop by way of the analysis facility; Outputting a second two-tone signal at a second level by way of the transmitter, wherein the first two-tone signal differs from the first two-tone signal in level; Acquiring a second test signal with a second intermodulation product via the signal loop by way of the analysis facility; Ascertaining a test value as a function of the level of the first two-tone signal, the level of the second two-tone signal, a level of the first intermodulation product and a level of the second intermodulation product; Comparing the test value with a reference value by way of the analysis facility; Outputting a signal to a controller of the magnetic resonance tomography scanner or a display for an operator, as a function of the comparison.