diff --git a/Aramis-Intensity-Diagnostics/SARES21-PBPS141.md b/Aramis-Intensity-Diagnostics/SARES21-PBPS141.md
index 5ccaa94..da07ac9 100644
--- a/Aramis-Intensity-Diagnostics/SARES21-PBPS141.md
+++ b/Aramis-Intensity-Diagnostics/SARES21-PBPS141.md
@@ -1,8 +1,22 @@
 ## Guide and electronics
 Connected to new electronics October 2024
 
+## Channels
+
+SARES21-PBPS141:Lnk9Ch0-PP_VAL_PD0  
+SARES21-PBPS141:Lnk9Ch0-PP_VAL_PD1   
+SARES21-PBPS141:Lnk9Ch0-PP_VAL_PD2  
+SARES21-PBPS141:Lnk9Ch0-PP_VAL_PD3  
+SARES21-PBPS141:Lnk9Ch0-PP_VAL_PD4  
+
 ## Diode
 
+### Test
+Using multimeter
+- Forward bias voltage drop of 0.4 V
+- Forward bias resistance 0.9 MOhm
+- Reverse bias voltage drop of 0.0 V
+
 Diodes are PIPs diodes
 
 As of 24.10.23
@@ -24,3 +38,17 @@ The diode connections are as follows:
 Values:
 
 ## BS config
+
+IOC for front end:
+
+`SAROP21-CVME-PBPS2.psi.ch`
+
+If the bs config needs to be updated use the following channels
+
+```python
+bs config SAROP21-CVME-PBPS2 -u
+SARES21-PBPS141:Lnk9Ch0-PP_VAL_PD0                      1      0
+SARES21-PBPS141:Lnk9Ch0-PP_VAL_PD1                      1      0
+SARES21-PBPS141:Lnk9Ch0-PP_VAL_PD2                      1      0
+SARES21-PBPS141:Lnk9Ch0-PP_VAL_PD3                      1      0
+SARES21-PBPS141:Lnk9Ch0-PP_VAL_PD4                      1      0
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