diff --git a/spf/v5_configs/wall_array_v2_external.yaml b/spf/v5_configs/wall_array_v2_external.yaml
index 6e7aab93..9d3bd283 100644
--- a/spf/v5_configs/wall_array_v2_external.yaml
+++ b/spf/v5_configs/wall_array_v2_external.yaml
@@ -43,11 +43,12 @@ receivers:
 
 
 n-thetas: 65
-n-records-per-receiver: 10000
+n-records-per-receiver: 5000
 width: 4000
 calibration-frames: 10
 routine: null
 skip_phase_calibration: true
   
 
-data-version: 5
\ No newline at end of file
+data-version: 5
+samples-per-second: 0.1