[Isocops] IBEX CEU SOH check for Orbits 140-142.

[Mark Tapley]

IBEX instrument teams,
	Still working.

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	For Arc 140a: No obvious spin problems. IBEX-Lo MCP Volt 
Monitor shows "Fuzz" as usual, before Day 1 and from about Day 
1.6-2.5; the fuzz suppression coincides with PMT voltage set-back, as 
seen before, and is as usual reflected in Positive 12 Volt CEU Switch 
Current. Otherwise Nominal.

	For Arc 140b: No obvious spin problems. IBEX-Lo MCP Volt 
Monitor shows "Fuzz" as usual, after Day 8.7 or so; the fuzz is as 
usual reflected in Positive 12 Volt CEU Switch Current. Otherwise 
Nominal.

	For Arc 141a: No obvious spin problems. IBEX-HI CEM Back 
Count slightly exceeds yellow limits around Day 1.2; IBEX-HI Positive 
Collimator Current shows some noise and a spike at the same time and 
around day 3.0. IBEX-Lo MCP Volt Monitor shows "Fuzz" as usual, 
before Day 3.5 or so, with one drop-out; the fuzz is as usual 
reflected in Positive 12 Volt CEU Switch Current. Otherwise Nominal.

	For Arc 141b: No obvious spin problems. IBEX-Lo MCP Volt 
Monitor shows "Fuzz" as usual, after Day 9; the fuzz is as usual 
reflected in Positive 12 Volt CEU Switch Current. Otherwise Nominal.

	For Arc 142a: Serious-looking spin problems day 1-3, 
reflected in all ACS parameters, with FractionValid remaining below 
0.01 for ~24 hours. After ~day 3, spin seems to lock on with no 
problems thereafter. IBEX-Hi Positive Collimator Current has some 
noise Days 1-1.5 or so. IBEX-Lo MCP Volt Monitor shows "Fuzz" as 
usual, up to day 3; the fuzz is as usual reflected in Positive 12 
Volt CEU Switch Current.

	For Arc 142b: No obvious spin problems. IBEX-HI ESA Voltage 
goes to 0 once at start and once at end of arc, just inside end 
points.  IBEX-Hi Positive Collimator Current has some noise Days 
1-1.5 or so. IBEX-Lo MCP Volt Monitor shows "Fuzz" as usual, after 
day 8.5, with 3 drop-outs; the fuzz is as usual reflected in Positive 
12 Volt CEU Switch Current. Otherwise Nominal.

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-- 
						- Mark     210-379-4635
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