Frequency Devices 9002 - Frequency Ranges and Increments

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Section 4
17
Model 9002
Operation from the Front Panel
[all keys active]
The HZ or KHZ LED will be lit. The display will show the present corner frequency for the selected channel and filter
configuration number.
The corner frequency can be chosen in the range of 0.1 Hz to 102.4 kHz. (See Table 4.4 for 200 kHz models). The
numeric keypad or the ⇑/⇓ keys, in conjunction with the HZ/KHZ key, are used to change the frequency value.
When using the numeric keypad for CH1/CH2, FREQGAIN, or HZ/KHZ, ENT or any function key (excluding
SNG/DIF, ACT/BYP, or AD/DC) may be depressed to store the data. The recommended sequence is:
Enter the new frequency
Select HZ or KHZ
Press the ENT key
The ⇑/⇓ keys store the data immediately and no other key depression is required. As above, the HZ/KHZ key selects
the range of frequency to be displayed and entered. The frequency will increase or decrease by one increment in
accordance with Table 4.4.
Table 4.4 Frequency Ranges and Increments
Pressing CH1/CH2 will display the filter corner frequency of the selected channel. Any data displayed when using the
⇑/⇓ keys will be stored in the present filter configuration number and selected channel as the keys are being pressed.
[all keys active]
The function key toggles the selected channel between a single ended and differential input. Either the SNG or DIF
LED will be lighted. The data will immediately be stored to the present filter configuration number and
selected channel.
[all keys active]
This key toggles the selected channel between the filter in circuit mode (active) and the filter bypass mode (bypass).
The BYP LED will be on for bypass and off for active. This data will immediately be stored to the present
filter configuration number and selected channel.
[all keys active]
AC
DC
ACT
BYP
SNG
DIF
FREQUENCY
Frequency Range Frequency Increment
0.1 Hz-102.4 Hz 0.1 Hz
103.0 Hz-1,024.0 1 Hz
1,030.0 Hz-10,240 Hz 10 Hz
10,300.0 Hz-102,400 Hz 100 Hz*
* 10,400.0 Hz-204,800.0 Hz 200 Hz (for 200 kHz models only)