GE BiliSoft 2.0, Руководство по эксплуатации

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2-2
Light Pad Output
New BiliSoft 2.0 devices are shipped with light outputs that fall within a range. This range is the rated
output. The rated output is different between the small and large pads. With proper care, the Light
Pad output will match the Light Box output for the life of the product.
A new unit leaves the factory with measured outputs falling within the ranges shown in the table
below. The left column provides the average value for the center row readings. The middle column
provides the average output for the full measurement.
As the LED module ages beyond 50,000 hours, its output may decrease. The full output may
eventually fall below the rated range. However, effective treatment will continue until the full output
falls below 27
µW•cm
-2
•nm
-1
. Compliance standards recommend replacing the LED module when
the full output falls 25% below the minimum rated output. These values are shown in the far right
column of the table.
If the measured output is at, or below, the values shown under “Replacement”, see the
Troubleshooting chapter of this manual. If troubleshooting does not improve the average reading,
the LED should be replaced.
Once the check is completed, the unit is ready for use.
Factory Rated Outputs - Settings Replacement
Center-Row
Output
2
(bare fiberoptic
light pad)
µW•cm
-2
•nm
-1
Full Output
2
(bare light pad)
µW•cm
-2
•nm
-1
Output
2
Requiring LED
Replacement
1
(bare light pad)
µW•cm
-2
•nm
-1
Large Pad (D + E + F)/3 ≥
40.0
(A + B + C + D + E + F + G + H + I)/9 =
49
(+/- 25%)
Rated output range (36.75 – 61.25)
(A + B + C + D + E
+ F + G + H + I)/9
= < 27
Small Pad (C + D)/2 ≥ 60.0 (A + B + C + D + E + F) /6 = 70
(+/- 25%)
Rated output range (52.50 – 87.50)
(A + B + C + D + E
+ F) /6 =
< 39
Note
1
: IEC standards recommend LED module replacement at 25% output reduction from
minimum output rating. Those values are 27 μW · cm
-2
· nm
-1
for the large pad and 39 μW · cm
-2
·
nm
-1
for the small pad. This should not occur until hours of use significantly exceeds 50,000 hours.
Note
2
: Using an Ohmeda Medical BiliBlanket Meter II. Measurement points for front of pad are
shown on back panel of pad and in Chapter 10.
Note: When the BiliSoft 2.0 fiberoptic light pad is inserted into a BiliSoft Pad Cover or Nest, the
measured output will reduce. The average full output for a new large pad system is 35 µW
• cm
-
2
• nm
-1
. The average full output for a new small pad system 50 µW • cm
-2
• nm
-1
.