diff options
Diffstat (limited to 'mpm/python/usrp_mpm')
| -rw-r--r-- | mpm/python/usrp_mpm/cores/tdc_sync.py | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/mpm/python/usrp_mpm/cores/tdc_sync.py b/mpm/python/usrp_mpm/cores/tdc_sync.py index 7a8dc8797..cc5158525 100644 --- a/mpm/python/usrp_mpm/cores/tdc_sync.py +++ b/mpm/python/usrp_mpm/cores/tdc_sync.py @@ -200,6 +200,16 @@ class ClockSynchronizer(object): self.log.trace("Reading {} TDC measurements from device...".format(num_meas)) current_value = mean([measure_offset() for _ in range(num_meas)]) + if (current_value < 120e-9) or (current_value > 150e-9): + self.log.error("Clock synchronizer measured a " + "current value of {} ns!".format( + current_value*1e9 + )) + raise RuntimeError("TDC measurement out of range! " + "Current value: {} ns.".format( + current_value*1e9 + )) + # Run the initial value through the oracle to determine the adjustments to make. target_values = [135e-9,] # only one target for now that all DBs shift to lmk_vco_freq = 2.496e9 # LMK VCO = 2.496 GHz @@ -212,7 +222,6 @@ class ClockSynchronizer(object): if not measurement_only: self.log.trace("Applying calculated shifts...") - self.dboard_clk_control.enable_outputs(False) # Coarse shift with the LMK. self.lmk.lmk_shift(coarse_steps_required) self.log.trace("LMK Shift Complete!") @@ -223,7 +232,6 @@ class ClockSynchronizer(object): time.sleep(0.5) if not self.lmk.check_plls_locked(): raise RuntimeError("LMK PLLs lost lock during clock synchronization!") - self.dboard_clk_control.enable_outputs(True) self.poke32(self.TDC_CONTROL, 0x1000) # Re-enable PPS return distance_to_target |