Centrad GF266 Manuel D'instructions page 30

- Use "Hyper Terminal ®", a simple utility for communicating via the serial
port, which is available on all PCs running Windows 95 ® or 98 ® or XP
® : "Start\Programs\Accessories\Communications HyperTerminal".
- Set up the port as follows (Fig. 11) :
Bits per Second: 9600, Data bits: 8, Parity: None, Stop bits: 1, Flow control:
None
- Select File/Properties/Settings (Fig. 12)
Check The backspace key returns: Del, then click ASCII Setup (Fig. 13) :
In the ASCII Sending area , leave the check boxes unchecked, set 5 in
Line Delay and in Character Delay .
In the ASCII Receiving area , check the 3 boxes, then click OK.
- Save your setup.
You can now communicate remotely with your GF 266 generator (Fig. 14) .
6-3-2 COMMUNICATION PROTOCOL
The various functions are called by entering a 2-digit number (see table at the end of the manual) .
The tens digit replaces a button press and determines the selected menu.
The units digit replaces a thumbwheel switch action for selecting a parameter.
To validate and send digital data or parameters, press "Enter"(Return).
Example: To select the triangle function, type: "0" "2" "Enter".
Explanation: As indicated in the table, "0" selects the Function and "2" select the Triangle parameter.
To know the value of a parameter, use the "?" key.
Example: If you type "8" "0" "?" , you will be returned the current value of "Level", for example: 2.5 Vcc.
Note: For parameter interrogation, the unit is not significant.
Example: If you type "8" "2" "?" , you will also be returned to "Level" ; for example: 2.5 Vcc
To enter the numeric data of the parameter to be modified, use the "space" key.
Example: To change the level to 3.8 V, type: "8" "0" "space" "3" "." "8" "Enter"
Note: You can use either a decimal point or a decimal comma.
To navigate through the Frequency counter, modulation, Store and Recall menus, use "Enter" , "O" and "K" (OK) in
combination.
Example:To store the current setup in memory location 3: "7" "3" "Enter"
Explanation: 7 represents the Store menu, 3 represents the third memory location, pressing Enter accesses this
memory location, as confirmed by the generator display, which displays Store 3 on the lower line.
Press "O" and "K" to validate.
Other example: Measuring a frequency between 0.8 Hz and 25 MHz: "1" "0" "Enter"
Explanation: "1" selects the frequency counter, "0" selects the 0 -25 MHz range.
Pressing "Enter" changes the lower line of the display as follows: F_ext 0-25 MHz.
Pressing "O" and "K" validates the selection: Frequency counter, 0 -25 MHz range, and starts the
measurement.
The measured frequency is then displayed (Fig. 15) .
To quit the frequency counter, simply enter another parameter, for example : "0" "0" "Enter" (return to sine function).
fig. 13
fig. 14
"O" "K"
"O" "K"
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