Specifications

7 x 9 inches (178 mm x 229 mm)
Medtronic Confidential
Refer to the “Reference man.” category in doc#163256 for Printing
Instructions.
196407001 Rev A
About the Safety Margin Curves — The solid, curved lines appearing
above the strength-duration curve indicate the combination of amplitude
and pulse width values that provide a safety margin of two times the ampli-
tude threshold (
2X) and three times the amplitude threshold (3X). The 3X
curve may not be displayed in cases where the patient has relatively high
thresholds.
Selecting a Safety Margin and Programming Pending Values —
Options on this screen let you choose pending values for amplitude and
pulse width by either of two methods: by selecting the desired safety
margin, or by manually adjusting the displayed value for each parameter.
The pending values may then be programmed as permanent settings.
To select a safety margin, use the [∧
∧∧
∧] and [∨
∨∨
∨] buttons to adjust the
displayed value. Options are 1.0X (no margin), 1.5X, 2.0X, 2.5X and
3.0X. The default setting upon entry to this screen is 2.0X.
NOTE: By selecting a safety margin, the programmer automatically
displays the appropriate pending values for amplitude and pulse width.
The values displayed will be the combination that attains the selected
safety margin at the lowest possible drain on the pacemaker battery.
This combination is indicated by the label “(max battery life values),”
which appears below the pending values.
To select pending values manually, use the [∧
∧∧
∧] and [∨
∨∨
∨] buttons to
adjust the amplitude and pulse width values to the desired settings.
The safety margin attained by the selected values will be displayed.
To permanently program the amplitude and pulse width values
selected by either method above:
1. Position the programming head and select [
PROGRAM
].
2. Watch for the programming confirmation message.
Determining and Evaluating Parameter Settings 7-9