EOT END-OF-TRANSMISSION TERMINATOR
EOT=$ [CMT]
Specifies an OUTPUT (or "END-OF-TRANSMISSION") TERMINATOR of $, where $ is a
string of up to four ASCII characters, each entered as a hexadecimal byte in square
brackets ([01] through [1F]—the current transmission will be instantly halted if the
instrument perceives an EOT character of [00]). EOT must be the same for all net-
work nodes. In a multinode network, the last EOT character must be the same as the
COMMAND TERMINATOR (see the CMT command). For RS-485 (only), returns ACK
[EOT].
EOT [CMT]
Reads the currently effective END-OF-TRANSMISSION TERMINATOR. Returns $
[EOT].
EUS ENGINEERING UNIT STRING
EUS=$ [CMT]
Specifies "tailer" string $ for all transmissions from the RS-232/485 Interface Port in
response to a CHANNEL (CHN) or DUMP (DMP) command ($ is a string of up to 8
characters, including spaces). For RS-485 (only), returns ACK [EOT].
EUS=N/A [CMT]
Clears all characters from the existing "tailer" string. For RS-485 (only), returns ACK
[EOT].
EUS [CMT]
Reads current "tailer" string. Returns $ [EOT] or N/A [EOT].
EXC EXCITATION — Model 3570 DC Strain Gage Conditioner only
EXC=v [CMT]
Sets to v volts (DC) the excitation level of the Model 3570 DC Strain Gage Conditioner
(v = 2, 5, or 10). For RS-485 (only), returns ACK [EOT].
EXC [CMT]
Reads current excitation level. Returns v [EOT].
FIL FILTER
FIL=f [CMT]
Sets to f the digital filtering constant (0 ≤ f ≤ 9). For RS-485 (only), returns ACK [EOT].
FIL [CMT]
Reads current digital filtering constant. Returns f [EOT].
FRC FORCE
FRC=v [CMT]
Sets the SCALING FACTOR ("m" coefficient) so that the existing input yields a reading
equal to v (-32700 ≤ v ≤ 32700). Also sets desired precision (decimal-point location).
In "TWO-POINT" calibration, must be preceded by a ZERO (ZRO) command. For RS-
485 (only), returns ACK [EOT].
IMPORTANT: THIS COMMAND SHOULD ONLY BE APPLIED WHEN THE 3500
INSTRUMENT IS SET FOR "TWO-POINT" OR "CALCULATED" CALIBRATION—THAT IS,
WHEN THE CAL=MXB [CMT] COMMAND IS IN EFFECT. IF ENTERED WHEN
CAL=LIN [CMT], UNPREDICTABLE READINGS COULD OCCUR.
[NOTE: There is no valid interrogation form for the FRC command.]
FRQ FREQUENCY CALIBRATION —
Model 3540 Frequency Conditioner only
FRQ=i,u [CMT]
Sets an appropriate SCALING FACTOR for the Model 3540 Frequency Conditioner
based on "i" (the nominal full-scale rating of the frequency source—or the highest fre-
quency expected to be measured—in Hertz) and "u" (the corresponding value of the
B.5
COMMAND AND RESPONSE SYNTAX
B
B.8 3500 MNEMONIC COMMANDS
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