diff --git a/config/devices.properties b/config/devices.properties
index 3a86bff..0e92d2d 100644
--- a/config/devices.properties
+++ b/config/devices.properties
@@ -13,6 +13,7 @@ m_bm2try=ch.psi.pshell.epics.Motor|X12SA-OP-BM2:TRY1|||true
 m_bm3trx=ch.psi.pshell.epics.Motor|X12SA-OP-BM3:TRX1|||true
 m_bm3try=ch.psi.pshell.epics.Motor|X12SA-OP-BM3:TRY1|||true
 bpm1a=ch.psi.pshell.epics.ChannelDouble|X12SA-OP-BPM1:Current1:MeanValue_RBV -1 true|Read||true
+bpm1a_sig=ch.psi.pshell.epics.ChannelDouble|X12SA-OP-BPM1:Current1:Sigma_RBV -1 true|Read||true
 bpm1b=ch.psi.pshell.epics.ChannelDouble|X12SA-OP-BPM1:Current2:MeanValue_RBV -1 true|Read||true
 bmp1c=ch.psi.pshell.epics.ChannelDouble|X12SA-OP-BPM1:Current3:MeanValue_RBV -1 true|Read||true
 bpm1d=ch.psi.pshell.epics.ChannelDouble|X12SA-OP-BPM1:Current4:MeanValue_RBV -1 true|Read||true
diff --git a/script/test/CompareTimestampIocAndPc.py b/script/test/CompareTimestampIocAndPc.py
index 989b341..eaadd6b 100644
--- a/script/test/CompareTimestampIocAndPc.py
+++ b/script/test/CompareTimestampIocAndPc.py
@@ -8,7 +8,7 @@ def after(rec, scan):
     if rec.index==0:
         create_dataset(path, 's')
         create_dataset(pathpc, 's')
-    time_str = str(datetime.datetime.fromtimestamp(cache.nanos/1e9))
+    time_str = str(datetime.datetime.fromtimestamp(cache.timestampNanos/1e9))
     append_dataset(path, time_str , type = 's')
     time_str = str(datetime.datetime.fromtimestamp(time.time()))
     append_dataset(pathpc, time_str , type = 's')