Publication 5390-001 Revision B
8
Har
v
ard Appar
atus Model 33
T
win Syr
inge Pump User's Man
ual
User Interface: Description of Keys
Set
Rate
1
1
7
2
8
3
9
4
0
5
.
6
Enter
HARVARD
‘33’ Syringe Pump
Data Entry
Diameter
1
Rate
2
Diameter
2
Stop
Run
Change
Direction
Parallel
Reciprocal
Select
Mode
Proportional Only
Set Keys
Toggle
The keypad consists of 21 keys used for entering control information and data into the
pump. These keys are grouped into 3 sections (see Figure 3 above):
Set keys, toggle
keys, and data entry keys.
Set Keys
Set
Allows modification of a data item in this group of keys.To
modify a data item, press the relevant key after pressing the
SET key.
Rate 1
Displays/sets current rate of syringe 1. Also syringe 2 rate if
current mode is not Proportional. Scrolls through rate units
when setting.
Rate 2
Displays/sets current rate of syringe 2. Scrolls through rate
units when setting. Key only valid in Proportional mode.
Diameter 1
Displays/sets current diameter of syringe 1. Also diameter of
syringe 2 if current mode is not Proportional.
Diameter 2
Displays/sets current diameter of syringe 2. Key valid in
Proportional mode.
“1”
Used to display and set current Pump Chain address and to
scroll through supported baud rates while setting.
Toggle Keys
Parallel/
Chooses between Parallel and Reciprocal pumping operation.
Reciprocal
Select Mode
Chooses between Proportional, Continuous Run, or Auto Stop.
LED indicators display current mode. Pump must be stopped
to change modes.
Change
Reverses direction of both syringes and sets the valve control
Direction
output as appropriate.
Run/Stop
Starts or stops the pump.
Data Entry Keys
1 through 0, .
Used to facilitate the entering of numeric data values.
Enter
Stores displayed data value when entering data.
Figure 3. Keypad Interface
