25
of 148
With an IEEE488 and constant polling of the status register,
the processor's capacity is heavily dependent on the performance of the PC processor, the IEEE488 card and
the rate of program execution. This leads to incalculable delays. With a slow PC (286), a slow IEEE488 card
and use of the QBasic interpreter, the measurement time increases by up to 40 %.
With an IEEE488 with 286/12 MHz, QBasic and continuous polling, the total measurement time is prolonged
by approx. 2 ms before the actual measurement measurement (command decoding) and 9 ms following
the actual measurement. The actual measurement time increases by up to 40 %.
This type of operation is
extremely impractical.
For example: 200 m
Ω
-range, number 2.000, fastest setting C
min
, standard procedure:
15 ms + 40 % + 2 ms + 9 ms = 32 ms.
For example: 200 k
Ω
-range, number 20.000, fastest setting C
max
, standard procedure:
756 ms + 40 % + 2 ms + 9 ms = 1.069 ms.
Under identical conditions, but with the measurement-value display deactivated via a control command,
the response time following completion of a measurement does not decrease, because the RESISTOMAT
®
model 2329 has sufficient time to transfer the measurement result before it is displayed.
4.2. Identification menu
When the device is turned on, the following display appears:
Identification display following activation.
This display appears for 5 seconds, unless a key is pressed in the meantime or a quick start (page 30) was
activated.
Pressing the [F1] key (LANG) invokes the language menu where the required language can be selected.
Pressing the [F2] key (CLK) invokes the menu for setting the date and time.
Pressing the [F4] key (CONT) invokes the main menu.
If no key is pressed within 5 seconds following activation, the main menu is invoked.
RESISTOMAT TYPE 2329
SN: 123456
VERSION: V201202
CAL: C0001
DATE: 16.12.13
TIME: 13:25:26
LANG CLK
CONT
→
Serial number
→
Software version
→
Calibration date*
→
Current date
→
Current time
* The calibration number provides
a count of the calibrations
performed so far. This number
also appears in the test log, and
decisively determines whether or
not the device needs to be reset.
