diff --git a/.idea/runConfigurations/ACU_Test.xml b/.idea/runConfigurations/ACU.xml
similarity index 83%
rename from .idea/runConfigurations/ACU_Test.xml
rename to .idea/runConfigurations/ACU.xml
index 490fabd..e60a660 100644
--- a/.idea/runConfigurations/ACU_Test.xml
+++ b/.idea/runConfigurations/ACU.xml
@@ -1,5 +1,5 @@
 <component name="ProjectRunConfigurationManager">
-  <configuration default="false" name="ACU Test" type="PythonConfigurationType" factoryName="Python" folderName="Devices">
+  <configuration default="false" name="ACU" type="PythonConfigurationType" factoryName="Python" folderName="Devices">
     <module name="tmtc" />
     <option name="INTERPRETER_OPTIONS" value="" />
     <option name="PARENT_ENVS" value="true" />
@@ -13,7 +13,7 @@
     <option name="ADD_SOURCE_ROOTS" value="true" />
     <EXTENSION ID="PythonCoverageRunConfigurationExtension" runner="coverage.py" />
     <option name="SCRIPT_NAME" value="$PROJECT_DIR$/tmtc_client_cli.py" />
-    <option name="PARAMETERS" value="-s acu -l" />
+    <option name="PARAMETERS" value="-s acu -l -t 6" />
     <option name="SHOW_COMMAND_LINE" value="false" />
     <option name="EMULATE_TERMINAL" value="true" />
     <option name="MODULE_MODE" value="false" />
diff --git a/config/hook_implementations.py b/config/hook_implementations.py
index 43ad2a4..356f23b 100644
--- a/config/hook_implementations.py
+++ b/config/hook_implementations.py
@@ -112,7 +112,8 @@ def get_eive_service_op_code_dict(service_op_code_dict: ServiceOpCodeDictT):
     service_op_code_dict[CustomServiceList.GPS_1.value] = service_tuple
 
     op_code_dict = {
-        "0": ("ACU Tests", {OpCodeDictKeys.TIMEOUT: 2.0}),
+        "0": ("ACU: Tests", {OpCodeDictKeys.TIMEOUT: 2.0}),
+        "51": ("ACU: Print channel statistics", {OpCodeDictKeys.TIMEOUT: 2.0}),
     }
     service_tuple = ("ACU Devices", op_code_dict)
     service_op_code_dict[CustomServiceList.ACU.value] = service_tuple
@@ -312,6 +313,7 @@ def get_eive_service_op_code_dict(service_op_code_dict: ServiceOpCodeDictT):
         "27": ("Star Tracker: Stop image loader", {OpCodeDictKeys.TIMEOUT: 2.0}),
         "28": ("Star Tracker: Reset error signal", {OpCodeDictKeys.TIMEOUT: 2.0}),
         "29": ("Star Tracker: Set name of download image", {OpCodeDictKeys.TIMEOUT: 2.0}),
+        "30": ("Star Tracker: Request histogram", {OpCodeDictKeys.TIMEOUT: 2.0}),
     }
     service_star_tracker_tuple = ("Star tracker", op_code_dict_srv_star_tracker)
 
diff --git a/pus_tc/acu.py b/pus_tc/acu.py
index 7ffe438..a1b3709 100644
--- a/pus_tc/acu.py
+++ b/pus_tc/acu.py
@@ -5,6 +5,7 @@
 @author J. Meier
 @date   21.12.2020
 """
+import struct
 from tmtccmd.tc.packer import TcQueueT
 from tmtccmd.config.definitions import QueueCommands
 from gomspace.gomspace_common import *
@@ -51,19 +52,19 @@ class ACUHkTable:
     wdt_gnd_left = TableEntry(bytearray([0x00, 0x74]), TableEntry.uint32_size)
 
 
-def pack_acu_test_into(object_id: bytearray, tc_queue: TcQueueT):
+class CommandId:
+    PRINT_CHANNEL_STATS = 51
+
+
+def pack_acu_test_into(object_id: bytearray, tc_queue: TcQueueT, op_code: str) -> TcQueueT:
     tc_queue.appendleft((QueueCommands.PRINT, "Testing ACU"))
 
-    tc_queue.appendleft(
-        (QueueCommands.PRINT, "P60 Dock: Enabling ACU connected to X1 slot (channel 0)")
-    )
-    p60dock_object_id = P60_DOCK_HANDLER
-    command = pack_set_param_command(
-        p60dock_object_id, P60DockConfigTable.out_en_0.parameter_address,
-        P60DockConfigTable.out_en_0.parameter_size, Channel.on
-    )
-    # command = PusTelecommand(service=8, subservice=128, ssc=23, app_data=command)
-    tc_queue.appendleft(command.pack_command_tuple())
+    if op_code == "51":
+        tc_queue.appendleft((QueueCommands.PRINT, "ACU: Print channel stats"))
+        command = object_id + struct.pack('!I', CommandId.PRINT_CHANNEL_STATS)
+        command = PusTelecommand(service=8, subservice=128, ssc=30, app_data=command)
+        tc_queue.appendleft(command.pack_command_tuple())
+        return
 
     if ACUTestProcedure.all or ACUTestProcedure.reboot:
         tc_queue.appendleft((QueueCommands.PRINT, "ACU: Reboot"))
diff --git a/pus_tc/star_tracker.py b/pus_tc/star_tracker.py
index 9b974c4..56b0f53 100644
--- a/pus_tc/star_tracker.py
+++ b/pus_tc/star_tracker.py
@@ -27,6 +27,7 @@ class StarTrackerActionIds:
     SUBSCRIBE_TO_TM = 18
     REQ_SOLUTION = 24
     REQ_TEMPERATURE = 25
+    REQ_HISTOGRAM = 28
     LIMITS = 40
     MOUNTING = 41
     CAMERA = 42
@@ -222,3 +223,8 @@ def pack_star_tracker_commands(object_id: bytearray, tc_queue: TcQueueT, op_code
                   bytearray(filename, 'utf-8')
         command = PusTelecommand(service=8, subservice=128, ssc=54, app_data=command)
         tc_queue.appendleft(command.pack_command_tuple())
+    if op_code == "30":
+        tc_queue.appendleft((QueueCommands.PRINT, "Star tracker: Request histogram"))
+        command = object_id + struct.pack('!I', StarTrackerActionIds.REQ_HISTOGRAM)
+        command = PusTelecommand(service=8, subservice=128, ssc=55, app_data=command)
+        tc_queue.appendleft(command.pack_command_tuple())
diff --git a/pus_tc/tc_packer_hook.py b/pus_tc/tc_packer_hook.py
index 297c7b5..9e1bab5 100644
--- a/pus_tc/tc_packer_hook.py
+++ b/pus_tc/tc_packer_hook.py
@@ -60,7 +60,7 @@ def pack_service_queue_user(service: Union[str, int], op_code: str, service_queu
         return pack_pdu2_commands(object_id=object_id, tc_queue=service_queue, op_code=op_code)
     if service == CustomServiceList.ACU.value:
         object_id = ACU_HANDLER_ID
-        return pack_acu_test_into(object_id=object_id, tc_queue=service_queue)
+        return pack_acu_test_into(object_id=object_id, tc_queue=service_queue, op_code=op_code)
     if service == CustomServiceList.TMP1075_1.value:
         object_id = TMP_1075_1_HANDLER_ID
         return pack_tmp1075_test_into(object_id=object_id, tc_queue=service_queue, op_code=op_code)