HP 4934A - Page 26

NOTE
Key
Normal Frequency
FI 404 Hz
F2 1004 Hz
F3 2804Hz
F4
2713 Hz
5 T o store a different preset frequency:
Set the new frequency in the right window, using the — S TEP UP and
STEP DOWN keys.
Enter the new frequency into one of the stores by pressing the blue STORE key
followed by the appropriate blue FI to F4 key.
The normal frequency values are re-established when the power i s cycled or when the
measurement mode is switched between P/AR and N.T. GND.
Some Other Frequency
6 C hange the value of the transmitted frequency in the right window using the
STEP UP and STEP DOWN keys.
Single Frequency (SF) Signaling
7 P ress SF SKIP to prevent the instrument from transmitting signaling frequencies
in the range 2600 Hz ±150 Hz.
Changing the SF Skip Center Frequency
8 Disconnect the transmit side of the line from the test set first to avoid dropping
the circuit.
9 Set the new frequency in the right window.
10 Press STORE, followed by SF SKIP.
N OT E The SF SKIP center frequency 2600 Hz is re-established at power on or when the
measurement mode is switched between P/AR and N.T. GND.
2-8 Making Measurements