Connect A Radio Clock To The Dvr - EverFocus ECOR FHD 4F User Manual

The following time synchronization function must work with the radio-controller clock.
Time Sync Enable: Check to enable the time synchronization with the connected
radio-controlled clock.
Time Sync Interval: Select a time sync interval time (by hour) for the DVR to synchronize the
time with the radio-controlled clock.
Time Sync Range: The time sync range means the allowed time difference between the DVR
and the radio clock. If the time difference exceeds the entered time sync range (by second),
the DVR cannot be synchronized unless you manually set up the exact same time as the clock
or within the time sync range.
For example, if the radio-controlled clock time is 12:00:00 and you enter 30 seconds for the
time sync interval, the allowed time difference between the DVR and the clock should be
within 30 seconds which means the DVR time can be 11:59:30 ~ 12:00:30.
Time Sync Range
Radio-controlled Clock time
DVR time
First Sync of: Enter a first sync start time.
Apply To: Click the button to apply the same settings to the desired cameras.

6.4.1.1 Connect a Radio Clock to the DVR

To use a Radio Clock, you need to connect it to the alarm inputs of the DVR.
Connection Diagram:
Connect the positive (+) /negative (-) wires to the alarm inputs (1~4) /(G) of the DVR.
Alarm Out Alarm In
COM NC G G 4 3 G G 2 1
Alarm I/O of DVR
30 Seconds
12:00:00
11:59:30~12:00:30
+
1~4
-
G
Radio Clock
75
ECOR FHD 4F / 8F / 16F Full HD DVR
60 Seconds
12:00:00
11:59:00~12:01:00