diff --git a/src/Script_ABC_Blanton/1_Blanton_Script_A.ttl b/src/Script_ABC_Blanton/1_Blanton_Script_A.ttl
index 9710ac4..084fac7 100644
--- a/src/Script_ABC_Blanton/1_Blanton_Script_A.ttl
+++ b/src/Script_ABC_Blanton/1_Blanton_Script_A.ttl
@@ -1,7 +1,7 @@
 ; =============================================================================
 ; Script A for Blanton
-; Version : V1.2.0
-; Date    : 2026-09-07
+; Version : V1.2.1
+; Date    : 2026-09-08
 ; Author  : ETWen
 ; =============================================================================
 ; Version History:
@@ -535,6 +535,33 @@
 ;                                                                         out. Both files are still copied to /host/hw-eval/jobs
 ;                                                                         and out to the USB stick with everything else, so no data
 ;                                                                         is lost - the master log is just shorter
+;   V1.2.1  2026-09-08
+;                       ScriptA                                         Add a BER baseline sweep before the traffic run
+;                                                                         blanton_ber.sh init / start / sleep 30 / report / stop /
+;                                                                         clear, branched on SWB_UNIT0 and SWB_UNIT1 the same way
+;                                                                         the traffic block is. ScriptC already took the closing
+;                                                                         sweep after its traffic report, so the two now bracket
+;                                                                         the soak the way the DSC scans do
+;                                                                         sleep 30 is not arbitrary: it is blanton_ber.sh's
+;                                                                         BER_INTERVAL. 'report' before one full interval has
+;                                                                         accumulated reads a window that has not finished
+;                                                                         The block was copied from ScriptC, which runs it AFTER
+;                                                                         traffic, and its comment said so. In ScriptA it runs
+;                                                                         BEFORE traffic, so the comment was rewritten to match
+;                                                                         where the code actually is
+;                                                                         !! nothing settles between 'blanton_ber.sh clear' and
+;                                                                            'blanton_traffic_linespeed ps' that follows it. PRBS
+;                                                                            holds the lanes out of normal operation and 'clear' is
+;                                                                            what releases them, so the first traffic run of
+;                                                                            ScriptA now starts on lanes that have just been
+;                                                                            released. ScriptC does not have this ordering. Watch
+;                                                                            ScriptA's first traffic report for NA or FAIL pairs
+;                                                                            that ScriptC's does not show - if they appear, a sleep
+;                                                                            after 'clear' is the fix
+;                                                                         !! ScriptA now runs BER twice as far as the switch is
+;                                                                            concerned: once here and once inside ScriptC. Neither
+;                                                                            can overlap blanton_traffic_linespeed or
+;                                                                            blanton_tr518.sh - they all take over the same ports
 ; =============================================================================
 include "config.ttl"
 
@@ -744,6 +771,56 @@ sendln "config feature state lldp disabled"
 wait prompt_sonic_root
 sendln "config save -y"
 
+; ========== BER ==========
+; Baseline sweep, taken BEFORE the traffic run - ScriptC takes the closing
+; one after its traffic report, so the pair brackets the soak.
+; PRBS takes the SerDes out of normal operation; 'clear' is what puts the
+; lanes back, so it has to run before the traffic block below.
+; sleep 30 matches blanton_ber.sh BER_INTERVAL - reporting earlier reads an
+; interval that has not finished accumulating.
+if SWB_UNIT0 = 1 && SWB_UNIT1 = 1 then
+    wait prompt_sonic_root
+    sendln "./Blanton_Script/blanton_ber.sh init"
+    wait prompt_sonic_root
+    sendln "./Blanton_Script/blanton_ber.sh start"
+    wait prompt_sonic_root
+    sendln "sleep 30"
+    wait prompt_sonic_root
+    sendln "./Blanton_Script/blanton_ber.sh report"
+    wait prompt_sonic_root
+    sendln "./Blanton_Script/blanton_ber.sh stop"
+    wait prompt_sonic_root
+    sendln "./Blanton_Script/blanton_ber.sh clear"
+elseif SWB_UNIT0 = 1 && SWB_UNIT1 = 0 then
+    wait prompt_sonic_root
+    sendln "./Blanton_Script/blanton_ber.sh init -u 0"
+    wait prompt_sonic_root
+    sendln "./Blanton_Script/blanton_ber.sh start -u 0"
+    wait prompt_sonic_root
+    sendln "sleep 30"
+    wait prompt_sonic_root
+    sendln "./Blanton_Script/blanton_ber.sh report -u 0"
+    wait prompt_sonic_root
+    sendln "./Blanton_Script/blanton_ber.sh stop -u 0"
+    wait prompt_sonic_root
+    sendln "./Blanton_Script/blanton_ber.sh clear -u 0"
+elseif SWB_UNIT0 = 0 && SWB_UNIT1 = 1 then
+    wait prompt_sonic_root
+    sendln "./Blanton_Script/blanton_ber.sh init -u 1"
+    wait prompt_sonic_root
+    sendln "./Blanton_Script/blanton_ber.sh start -u 1"
+    wait prompt_sonic_root
+    sendln "sleep 30"
+    wait prompt_sonic_root
+    sendln "./Blanton_Script/blanton_ber.sh report -u 1"
+    wait prompt_sonic_root
+    sendln "./Blanton_Script/blanton_ber.sh stop -u 1"
+    wait prompt_sonic_root
+    sendln "./Blanton_Script/blanton_ber.sh clear -u 1"
+else
+
+endif
+
 if SWB_UNIT0 = 1 && SWB_UNIT1 = 1 then
     wait prompt_sonic_root
     sendln "blanton_traffic_linespeed ps"