Specifications
Input/Output
Port Specifications
The following table shows the input/output port specifications for the MSO4000B
Series and DPO4000B Series oscilloscopes.
Table 8: Input/Output port specifications
Characteristic Description
Ethernet interface Standard on all models: 10/100/1000 Mbps
GPIB interface Available as an optional accessory (TEK-USB-488 GPIB to USB Adapter), which connects
to the USB Device and USB Host port.
The control interface is incorporated into the instrument user interface.
Video signal output
A15-pin D-sub VGA connector.
USB interface 4 USB host connectors (2.0 HS), two on the instrument front and two o n the rear.
1 USB device connector (2.0 HS), on the instrument rear panel.
All are standard on all models.
Probe compensator output voltage
and frequency, typical
Output Voltage
Default: 0-2.5 V amplitude ± 2% (Source Impedance o f 1K)
TPPXX00 Cal Mode: 0-2.5 V amplitude ± 5% (Source Impedance of 25)
Frequency
1 kHz ± 25%
You can set the auxiliary output (the rear-panel AUX OUT port) to Main Trigger or Reference
Clock or Event by pushing the Utility front-panel button and turning Multipurpose knob a
to select Ext. S ig nals . Then push the bottom-menu AUX OUT button and the desired
side-menu button.
Main Trigger: A HIGH to LOW transition indicates that the trigger occurred.
Reference Clock: Outputs the 10 MHz oscilloscope reference clock.
Event: Outputs a pulse when a certain event happens, such as a mask-limit event.
Trigger output logic levels
Characteristic
Limits
Vout (HI)
2.5 V open circuit
1.0Vintoa50 load to ground
Auxiliary output ( AUX O UT)
Main Trigger or
Reference Clock or
Event
Vout (LO) 0.7 V into a load of 4mA
0.25 V into a 50 load to ground
External Reference nominal input
frequency
10 MHz
You must select either the internal reference (default) or 10 MHz external.
External Reference input frequency
variation tolerance, typical
9.9 MHz to 10.1 MHz
You must run SPC, described in step 2 of the Self Test, whenever the external reference is
more than 0.2% (2000 ppm) different than the nominal reference frequency or reference
at which SPC was last run. (See page 55, Self Test.) The time base changes in
correspondence to the fluctuations in the external reference.
External Reference input sensitivity,
typical
1.5 V
p-p
for input frequencies between 9.9 MHz and 10.1 MHz
MSO4000B and DPO4000B Series Specifications and Performance Verification 21
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