From 9a509e50701d9a1c29590478be2f4ae52ec50b72 Mon Sep 17 00:00:00 2001
From: hartytp <thomas.harty@physics.ox.ac.uk>
Date: Sat, 6 Oct 2018 14:19:49 +0100
Subject: [PATCH] Zotino: increase delay after register read in init method to
 avoid underflows

---
 artiq/coredevice/ad53xx.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/artiq/coredevice/ad53xx.py b/artiq/coredevice/ad53xx.py
index 9acdd3104..7e8654d63 100644
--- a/artiq/coredevice/ad53xx.py
+++ b/artiq/coredevice/ad53xx.py
@@ -171,7 +171,7 @@ class AD53xx:
             ctrl = self.read_reg(channel=0, op=AD53XX_READ_CONTROL)
             if ctrl & 0b10000:
                 raise ValueError("DAC over temperature")
-            delay(15*us)
+            delay(25*us)
         self.bus.write(  # enable power and overtemperature shutdown
             (AD53XX_CMD_SPECIAL | AD53XX_SPECIAL_CONTROL | 0b0010) << 8)
         if not blind: