Boonton 9240 series rf voltmeter, Installation 2-4 – Boonton 9240 RF Voltmeter User Manual

Page 26

Boonton 9240 Series RF Voltmeter

8. Use the key to move the "<" cursor to SWITCHES and press . Press each

front panel key, avoiding

until last. Each key press will result in an identifying message;
will exit the test and return to the MENU.

9. Use the key to select RECORDER and press . This test will sequentially

send a DC voltage in 1 volt steps to the recorder output BNC connector on the rear panel. The test
will continue until

is pressed. Use a DC voltmeter to verify correct operation.

10. Press

to return to the measurement display.

11. Press the key and verify that the RF Voltage Probe serial number(s) appear under the

channel heading(s). An active channel with no sensor installed will report a table number.

12. Press the key and verify that the filter time and number of samples appear for each active

channel.

13. Press the

key followed by the key and select ZERO function for the active

channel. Verify the ZERO operation completes successfully.

14. Repeat steps 13 for channel 2 if installed.

15. Connect a GPIB controller to the Model 9240. Verify that the instrument can be addressed to Listen at

its IEEE bus address, and set to Remote. The display must show the correct status on the bottom line
of the display. For message passing, the line terminators for the controller and the Model 9240 must
be compatible for both Listen and Talk. Use

to set address and
terminators for the 9240. Address the Model 9240 to Listen/Remote and send the command "*IDN?"
EOL. Then address the Model 9240 to Talk (controller to listen) and verify that the correct
identification string is returned. For example using SCPI emulation the ID string returned would be as
follows;

BOONTON

ELECTRONICS,

9242,

11002,

20110111

16. Connect a dumb terminal or PC serial terminal to the Model 9240. Use a null modem if the terminal is

wired as DCE. For message communication to take place, the parameters of the serial connection and
message strings must agree between the terminal and the Model 9240. Use

232> to set parameters for the 9240. Send the command or "*IDN?" EOL and verify that the correct
identification string is returned.

Installation

2-4