INSTRUCTIONAL MANUAL
2750L-P/4500L-P/6000L-P
August, 2001
Rev. K
-65-
factor.
3.7.30
TO TALK THE MEASURED OUTPUT APPARENT POWER (TLK APW)
APW may be used as an argument to the header TLK with an A, B or C extension. When used as an argument, it will
set up the AC Power System to measure the Apparent Power output in VA with 1 VA resolution for the 4500L-3Pand
2750L-3P. The apparent power is measured in KVA with 0.01 KVA resolution for all other models.
When APW is used as a header in a string with no argument, it will cause the front panel to display the measured
output Apparent Power.
3.7.31
TO TALK THE MEASURED OUTPUT FREQUENCY (TLK FQM)
FQM may be used as an argument to the header TLK. There are no extensions for this argument. When FQM is used
as an argument, it will set up the AC Power System to measure the output frequency in hertz.
When FQM is used as a header, it will cause the front panel to display the measured output frequency.
3.7.32
TO TALK THE MEASURED OUTPUT PHASE ANGLE (TLK PZM)
PZM may be used as an argument with an extension A, B or C for the header TLK. When used as an argument, PZM
will set up the AC Power System to measure the phase angle of phase B and C relative to phase A. The measurement
is made at the External Sense terminals. Phase A is the reference phase and will always be reported as 000.0 degrees
unless the AC Power System is operating in the external sync mode.
When PZM is used as a header, it will cause the front panel to display the phase measurement screen.
3.7.33 MESSAGE
SEPARATORS
A complete message consists of a header and an argument. Since more than one message can be sent in a setup
string, message separators included in the string between the message will make it more readable to the human
operator. Three message separators are recognized: the comma (,), semicolon (;) and a space. Since these
separators are ignored, they may be dispersed throughout a setup string.
The following are two examples of ASCII strings with separators:
PHZA90;FRQ60;AMP115
CRL,90;FRQ50;AMP,120
3.7.34 SERVICE
REQUEST
After power-up the GPIB Service Request (SRQ) will be generated after any error (example. syntax, output fault, etc.).
This SRQ output can be inhibited by the SRQ header followed by the single digit "0". The SRQ can be reenabled by
the SRQ header followed by 1. Sending SRQ2 causes an SRQ to be generated after the execution of a setup string or
when data is available after request of measurements. The setup string can be of any type: ramp, calibration, etc.
The following example disables GPIB SRQ.
SRQ0
Summary of Contents for 2750L-P Series
Page 119: ...INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 115 Figure 6 1 MODULE LOCATION...
Page 138: ...INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 134 Figure 14 EMERGENCY VOLTAGE...
Page 148: ...INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 144 FIGURE 2...
