Adapter Setting - Agilent Technologies 4294A Programming Manual

Preparing For Accurate Measurement

Adapter Setting

Adapter Setting
To select an adapter, use the command given below.
•
If you select any adapter other than NONE, you need to measure the data indicated in the
table below to calculate the setup data.
To measure data, use the command given below.
•
After measuring the necessary data, execute the command given below to calculate the
setup data for the selected adapter and then store this in the nonvolatile memory
(EEPROM).
•
NOTE If you execute the "ECAL{P|A|B|C}" command to measure unnecessary data, an error
occurs and the command is ignored.
To suspend the above process, execute the command given below.
•
A sample program for adapter setting is shown in Example 4-1. This program is given the
file name adapter.bas and is stored on the sample program disk.
This program selects 7mm 42942A for adapter setting, measures phase data, open data,
short data and load data and then stores them in nonvolatile memory.
Lines 40 to 100
Line 110
Lines 130 to 160
Lines 180 to 190
54
"E4TP" on page 309
Adapter Phase
NONE Unnecessary
4TP 1M Necessary
4TP 2M Necessary
7mm 42942A Necessary
PROBE 42941A Necessary
"ECAL{P|A|B|C}" on page 309
"ECALDON" on page 309
"ECALQUI" on page 310
These lines distinguish between the external controller and Instrument
BASIC and set the GPIB address and the select code.
This line substitutes the adapter selection to the variable Adapter$.
These lines reset the Agilent 4294A and then set the adapter selection
to the variable Adapter$.
These lines set 1 to Bit 8 of the instrument event status register (the bit
for completion of the measurement of calibration data and
compensation data) and to Bit 2 of the service request enable register
so that SRQ can be used.
Open Short
Unnecessary Unnecessary
Unnecessary Unnecessary
Unnecessary Unnecessary
Necessary Necessary
Necessary Necessary
Load
Unnecessary
Necessary
Necessary
Necessary
Necessary
Chapter 4