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FRONT PANEL DESCRIPTION
15
1. Power Switch: Pushing the switch "ON" will light the LED
digits (14) to indicate power "ON".
2. Frequency: Turn the switch to set the desired frequency
generated. This knob is for micro-adjust.
3. Synchronous Output: TTL level square wave signal.
4. Sweep Output: Sweep signal output BNC. It will operate
individually whether the instrument set to
sweep mode operation or not, output
impedance of 1k , output amplitude 10Vp-p,
output signal: Linear or Log.
5. Main Output: Waveform selected by Function switch. Max.
output impedance 50 .
20Vp-p (no load).
6. Amplitude: Turn switch to adjust the amplitude of the output
signal.
Pull out the switch to attenuate the
output 20 times (or –26dB).
7. DC Offset: The switch is set to OFF position in normal
operation. When used for BIAS circuit, pull "ON"
the switch and turn to adjust DC offset voltage.
8. Sweep Rate: Rotate switch to adjust the sweep rate from 5sec
to 10mS at the Sweep Output (4). Pull switch to
synchronous output signals from (4) and (5).
9. Sweep Width: The switch is operational only when switch
(8) is set to "ON". Rotate the switch to adjust
the sweep width.
(switch in), the unit is set to "Linear Sweep".
Pull the switch out for the "ON" position, set
the unit to "Log Sweep".
10. Function Wave Selector: Rotate
11. Frequency Range: Selects output frequency range by
rotating switch.
displayed on (14) will be the product of
the selected digits by (2) and (11).
The frequency will be 10 times
difference on each step. Four ranges:
x1, x10, x100, x1000.
14
13
12
1
2
16
Output frequency as MAIN output.
Max. amplitude
In the normal position
switch
to
between
four
waveforms:
sine, triangle,
square, and DC.
The frequency
11
10
9
17
18
19
4
12. Hz: The lit LED indicates the display units are "Hz".
13. kHz: The lit LED indicates the display units are "kHz".
14. LED Digits: 5 digits indicates the frequency generated or
15. EXT. Counter: The red LED indicates Ext. counter
16. Display: Selects the source of the frequency displayed by
INT Hz / kHz - Display the frequency of the signal
EXT HF - Display the external input high frequency
EXT LF - 100kHz Filter - Display the external input low
17. RAMP / PULSE: Rotate switch to generate a RAMP wave
18. EXT Input: External signal input BNC.
select
output
19. V.C.F. Input: External input DC signal to control the
-4-
8
7
3
the EXT input. The units will be indicated by
(12) or (13) selected by CPU automatically.
condition.
LED lit - trigger level too high.
LED dark - trigger level too low.
LED flashing - triggering state.
(14).
generated by the GF-8056.
signal. This position filters out the DC signal
and low frequency harmonic signal. Inputs only
the expected high frequency signal.
frequency signal.
position filters out the signal
higher than 100kHz making the
low frequency signal more stable.
from a Triangle wave and a PULSE
wave from a Square wave. Pull switch
out to Invert position, output will be
negative Ramp and negative Pulse.
frequency is 0.2Hz to 60MHz, max. input
voltage 150Vrms [when (17) is at "PULL"
position].
frequency generated.
External input AC sweep signal to make it
external sweep.
External input AC sine wave to make it
external FM modulation.
Input signal 0~10V, < 1kHz.
Input impedance - 1k .
6
5
Set to this
The input
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