4-14
4.6.7 Output Coupling Capacitor Check
WARNING:
ENSURE ALL POWER
SETTINGS ARE AT 0 WATTS BEFORE
CONDUCTING THIS TEST TO PREVENT
INJURY TO PERSONNEL AND DAMAGE
TO TEST EQUIPMENT.
NOTE: Not all capacitance meters will read prop-
erly for this test. The test frequency should be at
or below 1 kHz for best accuracy. The following
meters have been tried successfully: Fluke 189,
Extech 285, Sencor LC75 and HP4284A (1 kHz
setting or below).
1. Connect shorting plug to banana adapter to
the two pin Dispersive Electrode Receptacle.
Use 6” or less test leads to connect a capaci-
tance meter between the shorting plug
adapter and the footswitched ReadiPlug™
Universal Accessory Receptacle.
2. Measure capacitance and confirm it is less
than 0.5 nF.
3. Confirm cut power is set to 0, then activate
and confirm capacitance is between 4.3 and
6.3 nF.
4. Do not activate for this bipolar test. Move
test leads to Bipolar Output Accessory
Receptacles. Confirm capacitance is between
9.6 and 14 nF.
4.7
System Calibration
The System 5000™ is calibrated during manu-
facture using equipment traceable to National
Institute of Standards & Technology (NIST)
standards and should retain its accuracy for a long
period of time. Recalibrate the generator after
repair or if it performs out of specification. Check
the calibration in normal operating mode and only
perform calibration if errors are identified.
The System 5000™ stores its calibration in non-
volatile semiconductor memory, so the calibration
will be retained without any action on the part of
the user or maintenance staff. Calibration should
be checked in normal operating mode during
annual preventative maintenance to ensure there is
no change. Calibration is required when:
• “Err 140” o
ccurs: An error is detected with
the stored calibration values.
• “Err 143” occurs: One or more modes require
calibration.
• The Controller board assembly (P/N 61-
6431), the Transformer board assembly (P/N
61-6445), or the Output board assembly (P/
N 61-6461) is replaced.
• Calibration differences are found during pre
-
ventative maintenance.
4.7.1 Calibration Preliminaries
Calibration on the System 5000™ occurs in
Calibration Operating Mode, which is entered by
setting the system configuration DIP switches on
the Controller board. Set the Calibration system
configuration DIP switch (A4SW2.2) to the ON
(UP) position and the Test system configuration
DIP switch (A4SW2.1) to the OFF (DOWN)
position. Other configuration DIP switch settings
positions will not affect this. See Section 4.9 for
system configuration DIP switch details.
With this configuration set, turn on power while
pressing and holding the Remote Power Control
Key. Release the Key when you hear the 4-tone
sequence. When the Remote Power Control Key
is released, CAL will appear in the Monopolar Cut
Power Digital Display and the software revision
will appear in the Monopolar Coag Power Digital
Display for a few seconds. The display will then
provide an indication of the calibration status:
• “
ALL
” will appear in the Monopolar Cut
Power Digital Display if the calibration mem-
ory is empty.
• “
nEr
” will appear in the Monopolar Cut
Power Digital Display, where “n” indicates
how many major modes require calibration,
will be displayed if only particular modes
require calibration. All of the minor mode
indicators will be illuminated and the minor
modes needing calibration will flash.
• “
[V
”, “
[0A
”, “
bP
”, or “
Pad
” will appear in
the Monopolar Cut Power Digital Display to
indicate the major mode when only minor
modes under that major mode require calibra-
tion. All of the minor mode indicators will
be illuminated and the minor modes needing
calibration will flash.
• “
[V
” will appear in the Monopolar Cut Power
Digital Display with the Pure Cut Mode
Indicator illuminated if all modes are cali-
brated.
