Technical data

Installation & Operation Manual GM-TTT
Page 18
free Indicates the status of the reference time input:
On: the serial data input indicates a free running mode, for example a
GPS or DCF77 receiver has not locked to the antenna signal.
Off: the reference time source has locked to the antenna signal.
Only with option GPS IN: a flashing LED indicates the number of satellites
found by the receiver.
mod. LED flashes every time that serial data of a reference time input has been
received. In normal operation that will be a flash every second.
Only with option DCF IN: LED indicates the time telegram, this should be
a flash every second as well - with no flicker in between. At the 59
th
second the flash will be suppressed.
cf Off: no colour lock mode selected.
On: colour lock mode is selected and the corresponding flag
bit of the time code is set, if V8 (8-field) lock is reached in
the 625/50 system.
Flashing slowly: colour lock mode is selected and V4 (4-field) lock is
reached in the 625/50 system.
Flashing fast: colour lock mode is selected but no colour lock can be
reached.
25 On: frame rate = 25 (television system 625/50).
LED off + LED 30 off: frame rate = 24.
30 On: frame rate = 30 Drop Mode (television system 525/60).
Flashing: frame rate = 30.
LED off + LED 30 off: frame rate = 24.