diff --git a/projects/daq2/common/daq2_bd.tcl b/projects/daq2/common/daq2_bd.tcl
index c49e3deaec9..73ea01a5347 100644
--- a/projects/daq2/common/daq2_bd.tcl
+++ b/projects/daq2/common/daq2_bd.tcl
@@ -255,3 +255,24 @@ ad_cpu_interrupt ps-10 mb-15 axi_ad9144_jesd/irq
 ad_cpu_interrupt ps-11 mb-14 axi_ad9680_jesd/irq
 ad_cpu_interrupt ps-12 mb-13 axi_ad9144_dma/irq
 ad_cpu_interrupt ps-13 mb-12 axi_ad9680_dma/irq
+
+
+## add sync
+
+ad_ip_instance ilvector_logic manual_sync_or [list \
+  C_SIZE 1 \
+  C_OPERATION {or} \
+]
+
+create_bd_port -dir I ext_sync_in
+ad_ip_parameter axi_ad9680_tpl/adc_tpl_core CONFIG.EXT_SYNC 1
+ad_connect ext_sync_in axi_ad9680_tpl/adc_tpl_core/adc_sync_in
+ad_connect axi_ad9680_tpl/adc_tpl_core/adc_sync_manual_req_out manual_sync_or/Op1
+ad_connect manual_sync_or/Res axi_ad9680_tpl/adc_tpl_core/adc_sync_manual_req_in
+
+
+
+ad_ip_parameter axi_ad9144_tpl/dac_tpl_core CONFIG.EXT_SYNC 1
+ad_connect manual_sync_or/Res axi_ad9144_tpl/dac_tpl_core/dac_sync_manual_req_in
+ad_connect axi_ad9144_tpl/dac_tpl_core/dac_sync_manual_req_out manual_sync_or/Op2
+ad_connect ext_sync_in axi_ad9144_tpl/dac_tpl_core/dac_sync_in
\ No newline at end of file
diff --git a/projects/daq2/zcu102/system_top.v b/projects/daq2/zcu102/system_top.v
index 30211420a33..aadb8d1f965 100644
--- a/projects/daq2/zcu102/system_top.v
+++ b/projects/daq2/zcu102/system_top.v
@@ -93,7 +93,7 @@ module system_top (
   wire            tx_ref_clk;
   wire            tx_sysref;
   wire            tx_sync;
-
+  wire            ext_sync_in;
   // spi
 
   assign spi_csn_adc = spi_csn[2];
@@ -148,7 +148,9 @@ module system_top (
     .I (trig_p),
     .IB (trig_n),
     .O (trig));
-
+  
+  assign ext_sync_in = trig;
+  
   assign adc_pd = gpio_o[42];
   assign dac_txen = gpio_o[41];
   assign dac_reset = gpio_o[40];
@@ -156,7 +158,7 @@ module system_top (
   assign gpio_bd_o = gpio_o[7:0];
 
   assign gpio_i[94:44] = gpio_o[94:44];
-  assign gpio_i[43:43] = trig;
+  assign gpio_i[43:43] = 0;
   assign gpio_i[42:37] = gpio_o[42:37];
   assign gpio_i[36:36] = adc_fdb;
   assign gpio_i[35:35] = adc_fda;
@@ -167,6 +169,7 @@ module system_top (
   assign gpio_i[ 7: 0] = gpio_o[ 7: 0];
 
   system_wrapper i_system_wrapper (
+    .ext_sync_in(ext_sync_in),
     .gpio_i (gpio_i),
     .gpio_o (gpio_o),
     .gpio_t (),