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Model 2790 SourceMeter
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:
S.ETUP
SE.TUP
SET.UP
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.
Advanced scan setup notes
1.
2.
3.
4.
®
Switch System Reference Manual
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 7702, channel 121 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 (
TEMP) is selected.
The CHAN annunciator is on while in the scan setup menu.
For some channel-specific setups, you have to configure them from a menu. For
example, to set up and enable mX+b, you have to use MATH menu. While in that
menu, the CHAN annunciator will flash to indicate that you are editing the mX+b
math setup for that channel in the scan list. When you exit from the mX+b setup
menu, the CHAN annunciator stops flashing.
Paired channels — A paired channel function or operation can only be selected
for a primary channel. For the Model 7702, channels 1 through 20 are the primary
channels. Trying to select a paired channel function or operation for channels 21
through 42 will result in "INVALID CHAN."
Function changes — When you press a function key, the selected channel assumes
the mainframe setup for that function. Also, available channels (for the specified
slot) that follow will also assume that setup. Model 7702 example: If you press
DCV for channel 101, channels 101 through 140 will assume the DCV setup. Note
that channels for slot 2 are not affected.
7-15
Ω 4 or 4-wire RTD
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