Martel Electronics 235 - Manual (Page 15)

If the module is not capable of operating in the mode requested, an
error message will be displayed.
The operation of the Pressure Module can be found on page 36, that of
the mA/V Module can be found on page 54.
Ramp Key
The RAMP key is used to activate the ramp function which is covered in
the Output Functions section starting at page 54.
% Key (Model 235 Only)
The % Key allows easy access to the % Error Function. If the % ERR
Function has been set up using the SETUP menus (see page 19), press
the % Key to alternate between the Engineering Unit display and the %
ERR display.
SYS Key (Model 235 Only)
The SYS Key allows the Model 235 Calibrator to be used with a
Calibration System Database. Refer to the Calibration System Database
Instruction Manual for system information. Operation of the calibrator
is covered in this manual.
To enter the System mode of operation, press the SYS Key. The display
will show the tag number of an instrument previously loaded into its
memory on the top two lines of the display. Additionally, its sequence
in the group previously loaded from 01 to 28, and whether or not it has
been calibrated, is also indicated.
Operation
230/235 10
MCC #2 TT-101-
34688-A1-B
SEQ=01 READY