NOVATECH INSTRUMENTS
4210 198th St. SW #204
Lynnwood, WA 98036
USA
2940A Manual Rev 1.0
http://www.novatechsales.com
sales@novatechsales.com
6:
The command
‘Qe’
returns the stored values in the non-volatile EEPROM of the instrument.
The values returned reflect the last saved state of the 2940A and are as follows:
Fa 012.345678 1
Fb 012.345678 2
07 45 06 03 1B 05 01 00 01 00 EF FF B7 14
The first two lines show the output frequency of both channels in MHz to 1Hz resolution. The next line
has hexadecimal values showing the saved state of internal registers. Their interpretation in this example
is:
07
internal settings
45
internal settings
06
internal settings
03
internal mode (
‘03’
=Remote)
1B
internal settings
05
cursor position
01
baud rate register (
‘00’
=19200,
‘01’
=9600,
‘02’
=4800,
‘03’
=2400,
‘04’
=1200,
‘05’
=600,
‘06’
=300)
00
control status
01
External Reference Setting:
‘00’
=Use internal, VCTCXO,
‘01’
=5MHz,
‘02’
=10MHz,
‘03’
=1MHz,
‘04’
=2MHz,
‘05’
=1.544MHz (T1),
‘06’
=2.048MHz (E1).
These (above) are the same as the
‘Qr’
command.
00
internal settings
EF
internal settings
FF
internal settings
B7 ‘B7’
=save settings,
‘B8’
=use defaults
14
Software revision, in this example 1.4
SECTION 4: WINDOWS SOFTWARE
The 2940A comes with a CD that contains the SOF8_1940 windows software. This software is intended
for use with both the 2940A and the 1940A. The 1940A has four programmable frequencies and two
COM ports. The 2940A has two programmable frequencies and one COM port. When using the
SOF_1940 software with the 2940A, it is recommended that only one of the COM ports be used. The
other COM port can be set to an invalid COM port number to prevent it from operating.
