7 - Specification
207
TGF4000 Series Quick Start Guide
MODEL:
TGF4042
TGF4082
TGF4162
TGF4242
Trigger Generator
Internal Source Rate or Frequency:
20ns to 500s or 2mHz to 50MHz square waves
adjustable in 10ns steps.
40ns to 500s or 2mHz to 25MHz square waves
adjustable in 10ns steps.
Resolution:
10ns, 11 digits
Each channel has its own trigger generator. Channel 1 trigger is available for external use from the MAIN OUT 2 socket when Channel 2 is configured to
output Channel 1 sync waveform and sync source is set to trigger.
Dual-channel operations
Tracking
Independent (Off):
The channels are independent of each other.
Equal:
The two channels are identical and behave identically.
Coupling
Frequency coupling:
The frequencies of the two channels can be coupled. Changing the frequency of one channel changes
the frequencies of both channels.
Amplitude (and DC Offset) coupling:
Amplitude (and DC offset) of the two channels can be coupled. Changing the amplitude and offset on
one channel changes the amplitude and offset of both channels.
Output coupling:
Output On/Off can be coupled. Switching the output On/Off on one channel switches the output
On/Off of both channels.
Characteristics
Relative phase:
-360.000 to 360.000 degrees, 0.001 degree resolution (Phase offset cannot be set for Noise)
Channel to channel Skew (typical):
<1ns (when performing identical operations)
Crosstalk (typical):
<-80db
External Frequency Measurement
Function:
Frequency, Period, Positive Width, Negative Width, Duty Cycle
Frequency Range:
AC coupled
3Hz to >125MHz
DC coupled
100mHz to >125MHz
Source:
AC coupled
REF / COUNT (AC) IN
DC coupled
TRIG / COUNT (DC) IN
Frequency Resolution:
Up to 7 digits displayed.
Measurement Time:
Automatic
Input Range and
Sensitivity:
AC coupled
≤50MHz 100mVpp
- 5Vpp
>50MHz 250mVpp - 5Vpp
Maximum input ±10V
DC coupled
Threshold typically 1.2V;
Sensitivity 100mVpp (≤50MHz), 250mVpp (<50MHz)
maximum input +5V, -1V
Hysteresis:
Input hysteresis voltage 10mV
Accuracy:
±1 digit ± time base accuracy.
Time base Accuracy:
<± 1ppm initial settling error, <± 1ppm oscillator ageing rate in the first year, <1ppm over the
specified temperature range
