J. Kissel, D. Barker

I had to look didn't I. Anamaria asked me what channel represents the IMC VCO frequency. The answer is H1:IMC-VCO_FREQUENCY, which is a Beckhoff-renamed version of the signal from the timing comparator, H1:SYS-TIMING_C_FO_A_PORT_11_SLAVE_CFC_FREQUENCY_5.

However, to find this infomration out, I knew that the VCO frequencies are generated from the corner station timing comparator, so I opened up the timing screen. I found two things:
(1) The Timing MASTER's status light was red. Dave informs me that this is because of the recent tests of the 9 and 45 MHz oscillators in the EE shop. They had stolen a sync signal from port 7 of the MASTER via fiber into the EE shop. This has since been disconnected, which made the monitor of the status channel
H1:SYS-TIMING_C_MA_A_PORT_7_ERROR_FLAG
go red.
We've hit the monitor button, 
H1:SYS-TIMING_C_MA_A_PORT_7_ACTIVE 
and the status light has gone green.

(2) In the corner A fanout, even though it's unrelated to the IMC VCO frequency, we noticed that whatever 5 MHz frequency is being measured on port 11,
H1:SYS-TIMING_C_FO_A_PORT_11_SLAVE_ISIRIGB
is blinking in and out. The last attechment shows the past hour, showing that this has been intermittently blinking in and out for long time.

Screenshots of the timing screens also explain what we saw.

-------------

For the record, all of this was done in "observation mode." Granted, all I did was turn on and off monitors, but I don't think we should go into observation mode if the timing master status light is red... I assume this is because Beckhoff as a whole has not been folded into the settings monitoring.