Specifications

Channel Master Operation Manual
page 84 Teledyne RD Instruments
TF – Time of First Ping
Purpose Sets the time and date the Channel Master wakes up to start
data collection.
Format TFyy/mm/dd, hh:mm:ss
Range yy = year 00-99
mm = month 01-12
dd = day 01-31 (leap years are accounted for)
hh = hour 00-23
mm = minute 00-59
ss = second 00-59
Recommended Setting. Set using WinHADCP.
Description TF delays the start of data collection. This lets you deploy the
Channel Master in the Standby mode and have it
automatically start data collection at a preset time (typically
used in battery operated instruments). When the command is
given to the Channel Master to start pinging, TF is tested for
validity. If valid, the Channel Master sets its alarm clock to
TF, goes to sleep, and waits until time TF before beginning
the data collection process.
Example If you want the exact time of the first ping to be on November
23, 1992 at 1:37:15 pm, you would enter TF92/11/23,
13:37:15. If you want the Channel Master to begin pinging
immediately after receiving the CS-command (see notes), do
not enter a TF-command value.
NOTES.
1. Although you may send a TF-command to the Channel Master, you
also must send the CS-command before deploying the Channel Master.
2. If the entry is not valid, the Channel Master sends an error message
and does not update the wake-up time.
3. Sending a <BREAK> clears the TF time.