Fresenius Medical Care 2008T Operator's Manual page 96

Chapter 3—Setting Treatment Parameters
Blood Pressure Alarm Buttons
10:51
Note: Using cuff tubing longer than 10 feet may result in erroneous blood pressure readings.
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The Interval/Clock Time button is used to set the frequency (hr:min)
at which the patient's blood pressure will be read and recorded.
This interval may be set up in the Service Mode in one of two ways:

Interval – Blood pressure readings are taken at the selected
interval time between readings based on the start of treatment. If
this option is selected, the heading over the button will read
"Interval".

Clock Time – Blood pressure readings are taken every 5, 10, 15,
20, 30, or 60 minutes based on the local time (see below). If this
option is selected, the heading over the button will read "Clock
Time".
On the "Blood Pressure" screen only, the local time may be set by
selecting the clock in the upper right corner of the Dialogue Box. The
 or  (up or down) arrow keys on the Keyboard may be used to
change the time.
2008T Machine Operator's Manual P/N 490122 Rev N