Utah Medical Products FINESSE +, Руководство по обслуживанию

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Service Manual
23
In Coag mode the negative-feedback stage is not used in order to achieve high open-circuit
voltage, which is desirable. Coag mode maximum output is 100 watts at 250
Ω
patient load.
See Figure 6 for coag mode output power vs. load data.
0
20
40
60
80
100
120
0 500 1000 1500 2000
Power
(W
at
ts
)
Load Resistance (Ohms)
Blend 1 Mode
display = '99'
display = '50'
0
20
40
60
80
100
120
0 500 1000 1500 2000
Power
(W
atts)
Load Resistance (Ohms)
Blend 2 Mode
display = '99'
display = '50'
0
20
40
60
80
100
120
0 500 1000 1500 2000
Power
(Watts)
Load Resistance (Ohms)
Blend 3 Mode
display = '99'
display = '50'
0
20
40
60
80
100
120
0 500 1000 1500 2000
Power
(Watts)
Load Resistance (Ohms)
Cut Mode
display = '99'
display = '50'
Figure 5. Typical output power vs. load resistance for cut and blend modes
0
20
40
60
80
0 500 1000 1500 2000
Power
(Watts)
Load Resistance (Ohms)
Coag Mode
display = '75'
display = '37'
0
500
1000
1500
2000
2500
0 10 20 30 40 50 60 70 80 90 100
MOV
(volts,
ze
ro
to
peak)
Displayed Output Setting
MOV vs. Display, All Modes
Cut
Blend 1
Blend 2
Blend 3
Coag
Figure 6. Typical output power vs. load
resistance for coag mode
Figure 7. Maximum Output Voltage
vs. displayed settings