diff --git a/applications/apertif/commissioning/tests/verify_correlator_db_output.py b/applications/apertif/commissioning/tests/verify_correlator_db_output.py
index cb7c1f54aec9bf1b52c13aac7f31a48417621408..5a0184967616c7dc910480a0ebbebcaeb21e6ca5 100644
--- a/applications/apertif/commissioning/tests/verify_correlator_db_output.py
+++ b/applications/apertif/commissioning/tests/verify_correlator_db_output.py
@@ -53,6 +53,7 @@ N_pol          = 2
 N_tp           = N_pol * N_dish  # = 24
 N_vis          = N_tp * (N_tp + 1) / 2
 N_band         = 16
+N_slot         = 1024
 N_clk          = 256
 N_blk          = 176      # 8b mode
 Q_interleave   = 2
@@ -67,8 +68,14 @@ nof_10g        = 3        # Number of external 10G links per PN on UniBoard
 c_dbSize       = 1024
 c_dbPattern    = [13]*c_dbSize
 
-c_expDstMac  = 0x123456789ABC
 c_baseSrcMac = 0x002286080000
+c_wcudata = 1      # is 1 if Data Write is 'wcudata1', else is 2 if DataWriter is 'wcudata2', as defined in central_commands.sh
+if c_wcudata==1:
+    c_baseDstMacEth01 = 0xe41d2de42690
+    c_baseDstMacEth23 = 0xe41d2dbc3cd0
+else:
+    c_baseDstMacEth01 = 0xe41d2dbc3dc0
+    c_baseDstMacEth23 = 0xe41d2de40d30
 
 wsrtTelescopes = ['2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd']
 
@@ -207,9 +214,14 @@ for bui in beamlets:
             rdData = dbOutputReadData[ni]
             reportStr = 'unb = %2d, pn = %d, bui = %3d, ch = %2d : ' % (unb, pn, bui, ch)
             
-            # . dst mac
-            rdDstMac  = to_unsigned(rdData[0], 16) << 32
-            rdDstMac += to_unsigned(rdData[1], 32)
+            # . dst mac as defined in central_commands.sh
+            if   unb< 4: expDstMac = c_baseDstMacEth01
+            elif unb< 8: expDstMac = c_baseDstMacEth01 + 1
+            elif unb<12: expDstMac = c_baseDstMacEth23
+            elif unb<16: expDstMac = c_baseDstMacEth23 + 1
+
+            rdDstMac  = cm.to_unsigned(rdData[0], 16) << 32
+            rdDstMac += cm.to_unsigned(rdData[1], 32)
             if rdDstMac == expDstMac:
                 tc.append_log(tc.V_INFO_DETAILS, reportStr + 'destination MAC = 0x%012X is OK' % rdDstMac)
             else:
@@ -217,9 +229,9 @@ for bui in beamlets:
                 tc.set_result('FAILED')
 
             # . src mac
-            expSrcMac = baseSrcMac + unb * 256 + pn
-            rdSrcMac  = to_unsigned(rdData[2], 32) << 16
-            rdSrcMac += to_unsigned(rdData[3], 32) >> 16
+            expSrcMac = c_baseSrcMac + unb * 256 + pn
+            rdSrcMac  = cm.to_unsigned(rdData[2], 32) << 16
+            rdSrcMac += cm.to_unsigned(rdData[3], 32) >> 16
             if rdSrcMac == expSrcMac:
                 tc.append_log(tc.V_INFO_DETAILS, reportStr + 'source MAC = 0x%012X is OK' % rdSrcMac)
             else:
@@ -227,7 +239,7 @@ for bui in beamlets:
                 tc.set_result('FAILED')
 
             # . beamlet
-            rdBeamlet = to_unsigned(rdData[11], 16)
+            rdBeamlet = cm.to_unsigned(rdData[11], 16)
             if rdBeamlet == expBeamlet:
                 tc.append_log(tc.V_INFO_DETAILS, reportStr + 'beamlet = %d is OK' % rdBeamlet)
             else:
@@ -235,7 +247,7 @@ for bui in beamlets:
                 tc.set_result('FAILED')
               
             # . channel
-            rdChannel = to_unsigned(rdData[12], 32) >> 16
+            rdChannel = cm.to_unsigned(rdData[12], 32) >> 16
             if rdChannel == expChannel:
                 tc.append_log(tc.V_INFO_DETAILS, reportStr + 'channel = %d is OK' % rdChannel)
             else:
@@ -243,8 +255,8 @@ for bui in beamlets:
                 tc.set_result('FAILED')
     
             # . timestamp (= bsn)
-            rdBsn  = to_unsigned(rdData[13], 32) << 32
-            rdBsn += to_unsigned(rdData[14], 32)
+            rdBsn  = cm.to_unsigned(rdData[13], 32) << 32
+            rdBsn += cm.to_unsigned(rdData[14], 32)
             tc.append_log(tc.V_INFO_DETAILS, reportStr + 'read BSN = %d' % rdBsn)