diff --git a/datalab/gui/plugins/instrument.py b/datalab/gui/plugins/instrument.py
index 76a52561d..dd66eeb80 100644
--- a/datalab/gui/plugins/instrument.py
+++ b/datalab/gui/plugins/instrument.py
@@ -58,6 +58,7 @@ def __init__(
         self.items: list = []
         self._plot_kind: str | None = None
         self._plot_signature: tuple | None = None
+        self._value_range: tuple[float, float] | None = None
 
         splitter = QW.QSplitter(QC.Qt.Horizontal)
         self._stage = QW.QWidget()
@@ -226,7 +227,14 @@ def render(self, frame: InstrumentFrame) -> None:
             plot.do_autoscale(replot=False)
             if kind == "curve" and frame.value_range is not None:
                 plot.set_axis_limits("left", *frame.value_range)
+        elif kind == "curve" and frame.value_range != self._value_range:
+            # Like a new V/div on a scope: Y follows, the X zoom is kept
+            if frame.value_range is None:
+                plot.do_autoscale(replot=False, axis_id=plot.get_axis_id("left"))
+            else:
+                plot.set_axis_limits("left", *frame.value_range)
         self._plot_signature = signature
+        self._value_range = frame.value_range
         self.summary_label.setText(frame.summary)
         plot.replot()
 
diff --git a/datalab/tests/features/plugins/plugin_tools_app_test.py b/datalab/tests/features/plugins/plugin_tools_app_test.py
index 5984640e5..79d9dd4cf 100644
--- a/datalab/tests/features/plugins/plugin_tools_app_test.py
+++ b/datalab/tests/features/plugins/plugin_tools_app_test.py
@@ -11,12 +11,13 @@
 import numpy as np
 import pytest
 from qtpy import QtWidgets as QW
-from sigima.objects import create_image
+from sigima.objects import create_image, create_signal
 
 from datalab.config import Conf
 from datalab.gui.main import DLMainWindow
 from datalab.gui.plugins.instrument import InstrumentWindow
 from datalab.plugins import PluginRegistry
+from datalab.plugins.instruments import InstrumentFrame
 from datalab.tests import datalab_test_app_context
 from datalab.tests.features.plugins.plugin_test_dataset import temporary_plugin_dir
 
@@ -167,6 +168,22 @@ def test_plugin_tools_in_menus_and_instrument_window(
             assert window.summary_label.text().startswith("Frame")
             assert window.plotwidget.plot.get_axis_limits("left") == (-2.0, 2.0)
 
+            # A new value range with the same X axis updates Y and keeps the X zoom
+            plot = window.plotwidget.plot
+            x = np.linspace(0.0, 1.0, 11)
+            plot.set_axis_limits("bottom", 0.2, 0.6)
+            window.render(
+                InstrumentFrame((create_signal("Live", x, x),), value_range=(-5, 5))
+            )
+            assert plot.get_axis_limits("left") == (-5.0, 5.0)
+            assert plot.get_axis_limits("bottom") == (0.2, 0.6)
+            window.render(InstrumentFrame((create_signal("Live", x, x),)))
+            assert plot.get_axis_limits("left")[1] < 5.0
+            assert plot.get_axis_limits("bottom") == (0.2, 0.6)
+            wider = np.linspace(0.0, 2.0, 11)
+            window.render(InstrumentFrame((create_signal("Live", wider, wider),)))
+            assert plot.get_axis_limits("bottom")[1] >= 2.0
+
             window.live_button.setChecked(True)
             assert window._live_timer.isActive()  # pylint: disable=protected-access
             window.live_button.setChecked(False)