[evlatests] Maser Tomorrow

[Ken Sowinski]

On Tue, 7 May 2013, Vivek Dhawan wrote:

> Hi Keith,
>
> todays' short test shows the following:
>
>      Rb, at 01 UT MJD 56420 = 7pm May 7th:
>
> From VLBI (vs. MK)         +115 usec, rate +5.2e-10 s/s = 45 us/day.
> From L356 clock #1 vs.gps:  +88 usec, rate +5.2e-10 s/s
>
> The rate is right on the money. The offset is a little off, but it
> is in the realm of what we got on 'good' days (i.e. within ~20usec).
> This was a 1MHz narrow band experiment, and we know there is a BW-
> dependent delay offset which might be VLA or more likely VLBA filter
> delays. So I am in a state of tentative belief in the L356 monitor.
>
>
>
>      H maser, at 01 UT MJD 56420 = 7pm May 7th:
>
> From L356 clock 1 vs.gps:  offset (+1s - 0.7us), just under 1 sec.
>                                                    rate near zero.
>
> Is the ~1sec understood? Will it be removed before synch?. If so
> I think the H-maser can go in tomorrow.

Surely it is just that the H maser leads GPS by 0.7 usec?