Advanced Scan - Keithley 2750 User Manual

7-14 Scanning
7.
8.

Advanced scan

For an advanced scan, each enabled channel can have its own unique setup. Channels that
are disabled are excluded from the scan list.
When you enter the channel setup menu, the displayed information indicates the present
setup for the selected channel. The position of the decimal point in the "SETUP" message
indicates present range. Examples:
SETUP
SETUP
SETUP
SETUP
SETUP
SETUP
SETUP
The annunciators indicate which of the other instrument settings are enabled for the
selected channel. When you edit settings for the selected channel (auto range, rel, rate,
etc.) the related annunciators will turn on/off.
If you enabled the timer, set the timer interval using the hour/minute/second for-
mat. The timer can be set from 0.001 sec (00H:00M:00.001S) to 99 hrs, 99 min,
99.999 sec (99H:99M:99.999S). Note that pressing the AUTO key sets the timer to
0.001 sec. With the desired interval displayed, press ENTER.
The displayed reading count (RDG CT) sets the number of channels to scan
(STEP) or the number of scans to run (SCAN). You can change the reading count
to any finite value from 2 to 110000, or you can select infinite (continuous scan-
ning). To select infinite, set the reading count to 000000 to display INF. See
ger models," page 7-4, for details on reading count. With the desired reading count
setting displayed, press ENTER to return to the normal measurement display state.
V:101 1V range for channel 101. If the AC annunciator is off, the
function is DCV. If it is on, ACV is selected.
KΩ:102 10kΩ range for channel 102. If the 4-wire annunciator is off, the
function is Ω2. If it is on, Ω4 is selected.
mA:121 100mA range for channel 121. If the AC annunciator is off, the
function is DCI. If it is on, ACI is selected.
°C:103 TEMP function selected for channel 103.
HZ:104 FREQ function selected for channel 104.
S:105 PERIOD function selected for channel 105.
PR:111 For the Model 7700, channel 111 is paired to channel 101, and
cannot be changed. Channel pairing occurs when Ratio or
Channel Average is enabled, or when a 4-wire function (Ω4 or
4-wire RTD TEMP) is selected.
Model 2750 Multimeter/Switch System User's Manual
"Trig-