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R&S ESU
Instrument Functions
Basic Settings
4.264
Operating Manual 1302.6163.12 - 03
REFERENCE
INTERNAL /
EXTERNAL
The
REFERENCE INTERNAL / EXTERNAL
softkey activates the internal or exter-
nal reference.
If the external reference is selected, you can set the frequency of the external refer-
ence with the
REFERENCE FREQUENCY
softkey.
Remote command:
ROSC:SOUR EXT
ROSC:SOUR INT
REFERENCE
EXT (INT)
The
REFERENCE EXT (INT)
softkey provides a fail-safe if the external reference
signals fails for any reason.
The softkey activates the use of an external reference signal. However, if the
R&S ESU detects an unlock due to a missing external reference signal, the refer-
ence signal source automatically switches to use the internal reference signal.
Once the R&S ESU has switched to the internal reference signal it stays with the
internal reference. You have to switch back to the external reference signal manually
(press
REFERENCE EXTERNAL
and then activate
REFERENCE EXT (INT)
again).
The current source (internal or external) is indicated in the lower part of the softkey.
Remote command:
ROSC:SOUR EAUT
REFERENCE
FREQUENCY
The
REFERENCE FREQUENCY
softkey sets the frequency of the external refer-
ence. The range is from 1 MHz to 20 MHz with the default value being 10 MHz.
The reference frequency does not change after a preset to maintain the setup of a
test system.
Remote command:
ROSC:EXT:FREQ 10 MHZ
REF BW (NORM
WIDE)
The
REF BW (NORM WIDE)
softkey controls the PLL bandwidth used to sznchro-
nize with the external reference signal. Possible settings are NORM (PLL bandwidth
about 3 Hz) or WIDE (PLL bandwidth about 30 Hz). The default setting is NORM.
The reference settings do not change after a preset to maintain the setup of a test
system.
The softkey is available only if the external reference frequency is 10 MHz.
This function requires a synthersizer board revision with hardware code 7 or above .
You can check this information in the “HWC” column of the hardware info window
(see
Remote command:
ROSC:EXT:PLL NORM | WIDE
Содержание ESU Series
Страница 1: ...R S ESU EMI Test Receiver Operating Manual 1302 6163 12 03 Test Measurement Operating Manual...
Страница 25: ......
Страница 27: ...R S ESU Putting into Operation 1 2 Operating Manual 1302 6163 12 03...
Страница 29: ...R S ESU Getting Started 2 2 Operating Manual 1302 6163 12 03...
Страница 31: ...R S ESU Manual Operation 3 2 Operating Manual 1302 6163 12 03...
Страница 349: ...R S ESU Instrument Functions Basic Settings 4 318 Operating Manual 1302 6163 12 03...
Страница 405: ...R S ESU Instrument Functions User Port 4 374 Operating Manual 1302 6163 12 03...
Страница 439: ...R S ESU Remote Control Basics Status Reporting System 5 34 Operating Manual 1302 6163 12 03...
Страница 821: ...R S ESU Remote Control Programming Examples More Complex Programming Examples 7 32 Operating Manual 1302 6163 12 03...
Страница 841: ...R S ESU Error Messages Device Specific Messages 9 10 Operating Manual 1302 6163 12 03...
Страница 854: ...Operating Manual 1302 6163 12 03 10 13 R S ESU...
Страница 855: ...R S ESU 10 14 Operating Manual 1302 6163 12 03...