9
| offset voltage | + ½ * V
p-p
< 5.0 V
3.1.4. Duty cycle setting (except FREQCOUNTER mode).
This section describes the duty cycle setting of the signal outputted at the main output,
OUTPUT
jack.
Duty cycle can be set between 0% - 100%, by turning the
DUTY CYCLE
knob, using 1% resolution (see Table 4). The
DUTY
CYCLE
LED associated to
DUTY CYCLE
knob will be lighted when set duty cycle differs 50%, thus the signal on main output is
asymmetric.
Range
Lowest value
Highest value
Unit
Resolution
1 0
100
%
1
Duty cycle is displayed on the second line of the LCD display, using a 3-digit value field, followed by the measuring unit. On the right
of the second line, the words “Duty Cycle” will be displayed to identify that the duty cycle parameter is shown. Automatically, 7
seconds after the last change of the duty cycle value, the unit will display the output level.
3.1.5. CMOS level setting (except FREQCOUNTER mode).
This section describes the level setting of the
TTL/CMOS
style signal outputted at the
TTL/CMOS
output jack.
Output level at the
TTL/CMOS
jack can be fixed or adjustable, depending on the
TTL/CMOS
button. The button enables/disables the
use of
CMOS LEVEL
knob.
If
CMOS LEVEL
knob is disabled, it will output a fixed level TTL style signal at 4.5V (unloaded). The TTL LED will be lit. The fixed
TTL level is displayed on the second line of the LCD display using a 2-digit value field followed by the measuring unit. The words
“TTL OUT” will be displayed on the right of the second line to identify that the TTL level is shown. The unit will display the output
level automatically 7 seconds after the last turning of
CMOS LEVEL
knob,
If
CMOS LEVEL
knob is enabled, the CMOS output level can be set between 4.0V and 14.0V (unloaded) by turning it using 0.1V
resolution (see Table 5). The CMOS LED will be lighted. The CMOS level is displayed on the second line of the LCD display using a
3-digit value field followed by the measuring unit. the words “CMOS OUT” will be displayed on the right of the second line to identify
that the CMOS level is shown. The unit will automatically display the output level 7 seconds after the last turning of CMOS LEVEL
knob.
Signal
Lowest value
Highest value
Unit
Resolution
LED lighted
TTL
4.5
4.5 V - TTL
LED
CMOS
4.0
14.0
V
0.1
CMOS LED
Pressing this button will enable/disable the use of
CMOS LEVEL
knob. If enabled, the CMOS LED is lighted and the output level on
TTL/CMOS
output jack can be changed. If disabled, the TTL LED is lighted and there is a fixed level on TTL/CMOS output jack.
3.1.6. Sweep time setting (only for INTERNAL SWEEP mode).
This section describes the sweep time setting of the signal outputted on
OUTPUT
jack when
INTERNAL SWEEP
mode is active
(INT LED and LIN/LOG LED are lighted).
Sweep time parameter represents the time needed by the unit to perform a frequency sweep between two frequencies, a start frequency
and a stop frequency. Sweep time can be set between 0.01 s and 30.00 s by turning the
SWEEP TIME
knob using a 0.01s resolution
(see Table 6).
Range
Lowest value
Highest value
Unit
Resolution
1 0.01 30.00 s
0.01
Table 4: Duty cycle range
Table 5: CMOS level range
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
FAX 781.665.0780 - TestEquipmentDepot.com
