User`s manual

7800 Series Hysteresisgraph System User's Manual
Operation 4-11
4.1.4.3 Write To Coil EEPROM
The Write to Coil EEPROM menu selection requires the user to interact with hardware outside of the
computer. To perform this procedure, the user must ensure the appropriate Model 480 Fluxmeter has accurate
information stored under Coil Setup. Also, when writing a B-channel coil sensor, it must be plugged in to the
B-Field connector on the Model 780X front panel, and the Coil Setup instructions must be done using the
B-Field Model 480 (instrument on the left side of the console.) Conversely, when writing a H-channel coil
sensor, it must be plugged in to the H-Field connector on the Model 780X front panel, and the Coil Setup
instructions must be done using the H-Field Model 480 (instrument on the right side of the console.)
1. From the Sensing menu, select Write to Coil EEPROM. You will see the following display.
2. Select B Channel or H Channel, as appropriate.
3. Enter the Coil Serial Number. The serial number can be any combination of 10 alpha-numeric characters.
4. Connect an FCBL-6 User Programmable Cable Assembly with the customer-designed coil to the
B-Channel or H-Channel connector on the Model 780X front panel, as appropriate.
NOTE: Detailed Coil Setup instructions are provided in Paragraph 5.3 of the Lake Shore Model 480
Fluxmeter User’s Manual.
5. On the front panel of the appropriate Model 480 Fluxmeter, (B-Field on left, H-Field on right), press the
Coil Setup key. The following parameters must be entered. Press the Enter key to advance to the next
parameter. Don’t worry if the display times out. Any values you entered are retained.
Parameter Model 480 Display Entry
Input Resistance
Input R 100 kΩ
Coil Resistance
Coil R
Measured and entered by customer
Number of Turns (N)
Turns
Measured and entered by customer
Area (A)
Area
Measured and entered by customer
Area·Turns (A·N)
Area.Turns
Calculated by Model 480 *
* The user may enter number of turns (N) and area (A) and let the instrument calculate the resulting
area·turns (A·N). The user has the option to correct or over write the A·N value.
6. In the Write to EEPROM dialog box shown above, select the Write button.
NOTE: If you have a combined B, H Coil sensor, each connector must be individually written to.