diff --git a/ocs/diag_note.md b/ocs/diag_note.md
index e69de29..791bea2 100644
--- a/ocs/diag_note.md
+++ b/ocs/diag_note.md
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+1. 设置low freq 128 ,high freq 0  （最大）
+    python3 ocsdiag.py -i 10.57.216.97 -e 8 -s all -c reg-wt -p lowfreq_eq -v 128
+    python3 ocsdiag.py -i 10.57.216.97 -e 8 -s all -c reg-wt -p highfreq_eq -v 0 
+
+2. 设置tia_peak 为 100，全局的lane 0和lane 3设置为0(最大)
+    python3 ocsdiag.py -i 10.57.216.97 -e 8 -s all -c reg-wt -p tia_peak -v 100
+    python3 ocsdiag.py -i 10.57.216.97 -e 8 -s all -l 0,3 -c reg-wt -p tia_peak -v 0
+
+3. 校准ibias
+    python3 ocsdiag.py -i 10.57.216.97 -e 8 -s all -c ibias-auto-tune
+
+4. 校准mgc
+    python3 ocsdiag.py -i 10.57.216.97 -e 8 -c rtmr-prbs
+    python3 ocsdiag.py -i 10.57.216.97 -e 8 -s all -c mgc-auto-tune
+
+
+5. 查看retimer 误码情况
+    python3 ocsdiag.py -i 10.57.216.97 -e 8 -c vcmd -p "rtmr all"
+
+6. 查看眼图情况
+    python3 ocsdiag.py -i 10.57.216.97 -e 8  -c vcmd -p "rtmr 1 eye 1 a"
+    python3 ocsdiag.py -i 10.57.216.97 -e 8  -c vcmd -p "rtmr 2 eye 1 a"
+    python3 ocsdiag.py -i 10.57.216.97 -e 8  -c vcmd -p "rtmr 3 eye 1 a"
+    python3 ocsdiag.py -i 10.57.216.97 -e 8  -c vcmd -p "rtmr 4 eye 1 a"
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