Changing The Default Setting 4Agilent U1251A/U1252A User’s and Service Guide 75Table 4-1 Available setting options in Setup mode
Menu Item Available setting options Default factory
setting
Display Description Display Description
rHoLd [1]Refresh Hold
OFF Enables Data Hold (manual trigger)
500
100–1000 Sets the variation count that determines Refresh
Hold (auto trigger)
rESEt Reset dEFAU
Enables the reset of factory settings by pressing
and holding for more than 1 second dEFAU
Print Print ON, OFF Enables auto send of data to the PC continuously
when set to ON OFF
ECHO Echo ON, OFF Enables the return of characters to the PC when
set to ON OFF
dAtAb Data bits 7-bit, 8-bit Sets the data bit length for the remote
communication (remote control with PC) 8-bit
PArtY Parity check En, Odd, nOnE Sets the even, odd or no parity check for the
remote communication (remote control with PC) nOnE
bAUd Baud rate
2400 Hz, 4800
Hz, 9600 Hz,
19200 Hz
Sets the baud rate for the remote communication
(remote control with PC) 9600 Hz
b-Lit Backlit display 1–99 s [2]Sets the timer for the auto turn-off for the backlit
display 30 s
OFF Disables the auto turn-off for the backlit display
bEEP Frequency of beep
sound of meter
2400 Hz, 1200
Hz, 600 Hz,
300 Hz
Sets the frequency of the meter’s beep sound 2400 Hz
OFF Disables the meter’s beep sound
PErnt Percentage scale 0–20 mA, 4–20
mA Sets the % scale readout 4–20 mA
APF Auto power off 1–99 m [2]Sets the timer for auto power off 10 m
OFF Disables auto power off
FrEq Minimum frequency
that can be measured
0.5 Hz, 1 Hz, 2
Hz, 5 Hz
Sets the minimum frequency that can be
measured 0.5 Hz
rEF Reference impedance
for dBm measurement 1–9999 Ω [2]Sets the reference impedance for dBm
measurement
50 Ω