diff --git a/StationTest/tc/sync_delay.py b/StationTest/tc/sync_delay.py
index af2a5b0acfd998bccde84e4c3db66bb82c77bf55..e15ebe4cfba29a3c94361d8dd0a75a15b88e2b52 100644
--- a/StationTest/tc/sync_delay.py
+++ b/StationTest/tc/sync_delay.py
@@ -1,37 +1,37 @@
-""" Read the RSP status for one or all pid, based on TCL testcase 11.1"""
-
-################################################################################
-# - Verify options
-rspId = tc.rspId
-blpId = tc.bpId
-blpId.extend(tc.blpId)
-
-# Testcase specific options
-arg_edge  = arg_pps_edge
-arg_delay = arg_pps_delay
-
-tc.appendLog(11, '')
-if arg_read:
-  tc.appendLog(11, '>>> Read PPS input delay status for RSP-%s, BLP-%s.' % (rspId, blpId))
-  tc.appendLog(11, '')
-  for ri in rspId:
-    for bi in blpId:
-      rsp.read_cr_sync_delay(tc, msg, [bi], [ri])
-else:
-  if arg_delay==0:
-    if arg_edge=='r':
-      tc.appendLog(11, '>>> RSP-%s, BLP-%s: Reset PPS input delay to default and capture on rising edge.' % (rspId, blpId))
-      rsp.write_cr_sync_delay(tc, msg, 0, 0, blpId, rspId)
-    else:
-      tc.appendLog(11, '>>> RSP-%s, BLP-%s: Reset PPS input delay to default and capture on falling edge.' % (rspId, blpId))
-      rsp.write_cr_sync_delay(tc, msg, 0, 1, blpId, rspId)
-  else:
-    if arg_edge=='r':
-      tc.appendLog(11, '>>> RSP-%s, BLP-%s: Increment PPS input delay %d times and capture on rising edge.' % (rspId, blpId, arg_delay))
-      for ri in range(arg_delay):
-        rsp.write_cr_sync_delay(tc, msg, 1, 0, blpId, rspId)
-    else:
-      tc.appendLog(11, '>>> RSP-%s, BLP-%s: Increment PPS input delay %d times and capture on falling edge.' % (rspId, blpId, arg_delay))
-      for ri in range(arg_delay):
-        rsp.write_cr_sync_delay(tc, msg, 1, 1, blpId, rspId)
-tc.appendLog(11, '')
+""" Read or write external sync input edge and input delay, based on TCL testcase 2.2"""
+
+################################################################################
+# - Verify options
+rspId = tc.rspId
+blpId = tc.bpId
+blpId.extend(tc.blpId)
+
+# Testcase specific options
+arg_edge  = arg_pps_edge
+arg_delay = arg_pps_delay
+
+tc.appendLog(11, '')
+if arg_read:
+  tc.appendLog(11, '>>> Read PPS input delay status for RSP-%s, BLP-%s.' % (rspId, blpId))
+  tc.appendLog(11, '')
+  for ri in rspId:
+    for bi in blpId:
+      rsp.read_cr_sync_delay(tc, msg, [bi], [ri])
+else:
+  if arg_delay==0:
+    if arg_edge=='r':
+      tc.appendLog(11, '>>> RSP-%s, BLP-%s: Reset PPS input delay to default and capture on rising edge.' % (rspId, blpId))
+      rsp.write_cr_sync_delay(tc, msg, 0, 0, blpId, rspId)
+    else:
+      tc.appendLog(11, '>>> RSP-%s, BLP-%s: Reset PPS input delay to default and capture on falling edge.' % (rspId, blpId))
+      rsp.write_cr_sync_delay(tc, msg, 0, 1, blpId, rspId)
+  else:
+    if arg_edge=='r':
+      tc.appendLog(11, '>>> RSP-%s, BLP-%s: Increment PPS input delay %d times and capture on rising edge.' % (rspId, blpId, arg_delay))
+      for ri in range(arg_delay):
+        rsp.write_cr_sync_delay(tc, msg, 1, 0, blpId, rspId)
+    else:
+      tc.appendLog(11, '>>> RSP-%s, BLP-%s: Increment PPS input delay %d times and capture on falling edge.' % (rspId, blpId, arg_delay))
+      for ri in range(arg_delay):
+        rsp.write_cr_sync_delay(tc, msg, 1, 1, blpId, rspId)
+tc.appendLog(11, '')