PeakTech 4035 Bedienungsanleitung Seite 69

3.2 Output port
It is strictly forbidden to use output port as signal input, or else, may lead to instrument damage.
3.2.1 Signal output and port "output":
On the front panel, various waveform signals instrument generated output from the output port (P 4050) or
from the CH A/B output port (P 4035). Pressing 【output】key on the front panel circularly can turn on or off
the output port signal and there is output state displayed "OUTPUT：On/Off" on interface. At power-on,
default state of output port is on. If wrongly connect external voltage to signal output port, instrument will
suffer "inverse filling" danger, and then instrument will turn on the protection function, close signal output
port at once and display the information for overload protection. In this case, you must check external load,
only after eliminating the failure can press【output】key to turn on signal output port.
3.2.2 Sync output port "Sync":
On the front panel, it outputs TTL-compatible pulse waveform, +5 V high level, 0 V low level. For different
functions, frequency and pulse width are different, sync signal can be set to be on or off in system setting
interface.
In continuous waveform output, sync signal is a square wave with 50% duty cycle, whose frequency equals
frequency of current waveform, whose phase makes reference to current phase of current waveform.
In frequency or amplitude sweep, sync signal is a pulse wave whose rising edge corresponds to start
sweeping point, falling edge corresponds to sweep marker point, and cycle equals sweep time. In
FM，AM，PM，PWM modulation, sync signal is a square wave with 50% duty cycle, whose frequency
equals frequency of modulating waveform and phase makes reference to phase of modulating waveform.
In FSK, sync signal is a square wave with 50% duty cycle, whose frequency equals FSK rate, when FSK
outputs carrier frequency, sync signal is low level; when FSK outputs hop frequency, sync signal is high
level.
In burst mode, sync signal is a pulse wave whose rising edge corresponds to start point, falling edge
corresponds to stop point, and cycle equals burst cycle.
In sweep or burst, if select manual trigger or external source trigger, frequency of sync signal will be
determined along with trigger conditions.
3.2.3 Internal standard frequency output port "10MHz Out" (P 4050):
On the rear panel, it outputs 10MHz internal system clock signal and can be used for other synchronous
instruments.
Input port
There are 4 input ports of this instrument, 1 on the front panel, 3 on the rear panel. Input port is only used as
external signal's input and cannot be used as signal output.
3.2.4 Count input port "Counter" (6):
On the front panel, when use counter, input external measured signal, frequency range: 0.1 Hz~100 MHz,
amplitude range: 100 mVpp~20 Vpp.
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