NF DF 1906, Instruction Manual, Page: 77 / 96

7.5 Performance Test
DF1906
7-3
7.4 How to Check Version Number
The firmware vers ion of the
DF 1906
is displayed for several seconds in the lower right part at power
on.
The version number can also be read by USB r emote control query command "* I D N ? ".
Remote Control via USB

" 5. USB Interface "
7.5 Performance Test
A performance test is performed as part of preventative maintenance to prevent performance
deter ior ation of the DF 1906 .
A performance test is conducted when necessary to ver ify performance during acceptance inspection,
per iodic inspection, and after repair of the
DF 1906
.
If the specifications are not satisf ied after a performance test, calibration or repair is requir ed. Contact
NF Corporation or one of our agents.
Before a performance test, check the following points.
・
The voltage of the power line is 100 V to 240 V AC ±10%, however, 250 V or less
・
The ambient temperatur e is within 23±5
℃
.
・
The ambient humidity is within 20 to 70% RH.
・
No condensation.
・
Warming up for at least 2 hours.
Observe the following points when performing a performance test.
・
When use of a coaxial cable is spec if ied, us e a coaxial cable with a character istic impedance of 50
Ω, with a thickness of RG-58A/U or more, with a length of 1 m or less, and with a BNC connector
on both ends.
・
When 50 Ω termination is specified, set the input of the measuring instrument to be connected to
50 Ω. If the input cannot be set to 50 Ω with your measuring instrument, attach a 50 Ω coaxial
terminator (feed-through terminator) to the input of your measur ing instrument.
・
Befor e a performance test, initialize the settings and turn the output on.
Initialize Settings

" Clear Setting Memory " in " 4.3.1 Setting Memory "