Options Menu 3; Options Menu 4 - Hameg HM 8131-2 Manual

MainMenu 2 and its functions

5.45 Options menu 3

Options Menu 3 HM8131-2
** OPTIONS MENU 3 **
<-- Ref Disp -->
* FREQUNCY DIGITS *
FREQUENCY REFERENCE
Int Ext
Options menu 3 allows to select between internal or external
reference frequency [Ref]. [Disp] is used to define the resolution
of the frequency display.
Reference frequency [Ref]
In the standard execution the HM 8131-2 contains a stable crystal
oscillator. As an option the HO86 TCXO can be ordered which
features an accuracy of 5x10
installed or installed by the HAMEG service.
If a still higher accuracy is needed the internal oscillator can be
disabled and replaced by an external one which has to be connected
to the rear panel terminal [10 MHz IN/OUT]
reference must comply with the respective HM 8131-2 specifications
.
Selection of the reference frequency source
Go to the menu „OPTIONS MENU 3", item [Ref] and select either
[Int] or [Ext]. This will be displayed each time the instrument is
STOP
turned on.
[Out] will cause the internal 10 MHz reference to be
switched onto the terminal 10 MHz IN/OUT [19].
TiPP
If the frequency of the external source should be
outside the specified limits an error message will be
displayed. The instrument must then be returned to internal
reference operation, otherwise the frequencies from the
generator will not be correct.
STOP
Resolution of the frequency display [Disp]
[Disp] will call the menu "FREQUENCY DIGITS" which allows to
select the resolution of the display between 5 and 12 digits using

the pushbutton array .

5.46 Options menu 4

Options Menu 4 HM8131-2
** OPTIONS MENU 4 **
Lcd Date <--
Fri 24/01/03 16:55
- val +
** LCD PARAMETERS **
Contrast
74
- + 12
out:off
-7
. This option can only be factory
. The external
< cur >
Backlight
** LCD BACKLIGHT **
-
** LCD CONTRAST **
-
Options menu 4 is used to set the contrast and the brightness of
the LCD display [Lcd]. [Date] will set the date and time.
LCD menu [LCD PARAMETERS]
[Contrast] selects the contrast in 8 steps. The brightness of the
backlighing can be selected from off to maximum in 8 steps.
Date and time
The HM8131-2 has no real time clock. [Date] will allow to enter
date and time which is important especially when using memory
cards. These values remain stored until changed. Their meaning
may be quite different, e.g. also the date and time of the last
calibration. This menu can only be left by [ESC].
6.0 General commands
(memory card commands excepted)
Initialization
CLR Initialization of the HM8131-2. Stored arbitrary
functions will remain untouched.
RST Same as before except that any stored arbitrary
functions will be erased and replaced by those from
the factory.
General commands
STA? Reading the instrument configuration
VER? Reading the software version
SNR? Reading the serial number
ID? Reading the instrument ID (short version)
*IDN? Same, long version
TRG Generation of a trigger pulse
STO:x Store instrument status (0 .. 9)
RCL.x Recall instrument status (0 .. 9)
Bus commands
LK0 Erase "local lockout"
LK1 Activate "local lockout"
RM0 Reset to manual operation
RM1 Set to remote control
OT0 Switch off output
OT1 Switch on output
RFX Activate external reference frequency
RFI Activate internal reference frequency
BPO Turn off beep
BPS Turn on beep medium
BPL Turn on beep loud
Signal function
SIN Sine
SQR Square wave
TRI Trinagle
RMP Rising ramp
RMN Falling ramp
+
ARB4 Arbitrary signal 4k
ARB16 Same 16k
PINK Pink noise
+
NOISE White noise
Subject to change without notice