Agilent Technologies 33120A, Руководство пользователя

Страница: 93 / 312

FSK Carrier Frequency
œ
Carrier frequency: 10 mHz to 15 MHz (100 kHz for triangle
and ramp).
The default is 1 kHz . You can use sine, square, ramp,
triangle, or arbitrary waveforms for the carrier waveform.
œ
For arbitrary waveforms , the maximum carrier frequency depends on
the number of points specified in the waveform. The five built-in
arbitrary waveforms can be output at a maximum of 5 MHz.
œ
For an externally-controlled
FSK
waveform, the carrier frequency is
output when a “low”
TTL
level is applied to the FSK terminal. The hop
frequency is output when a “high”
TTL
level is applied.
œ
For
FSK
, the sync signal is referenced to the
FSK
“hop” signal (not the
carrier). A momentary
TTL
“high” pulse (> 200 ns) is output on the
transition to the “hop” frequency. The signal is output from the front-
panel
SYNC terminal.
œ
Front-Panel Operation : Press the
Freq
key and select any valid
frequency for the selected function (the present amplitude and offset
voltage are used).
œ
Remote Interface Operation :
FREQuency {<
frequency
>|MINimum|MAXimum}
You can also use the
APPLy
command to select the function, frequency,
amplitude, and offset of the carrier with a single command.
Number of Arb Points
8 to 8,192 (8k)
8,193 to 12,287 (12k)
12,288 to 16,000
Minimum Frequency
10 mHz
10 mHz
10 mHz
Maximum Frequency
5 MHz
2.5 MHz
200 kHz
3
Chapter 3 Features and Functions
Frequency-Shift Keying (FSK) Modulation
91