8
SETTING SYSTEM SCAN RANGE
Before you proceed to calibrate any of your system’s data channels, you should
define its default SCAN RANGE. In this section, you will learn to use the
TERMI-
NATOR (TER)
command to do this.
a. Enable the EEPROM Write Protect function by turning ON the EEPROM Switch
(placing it in the
upward position) or commanding BIT 999 = 1 [CR].
b. A System 10’s initial default scan range is normally preset at the factory. The
typical range is from Channel No. 1 through the highest Channel Number
called for by the system configuration specified at the time of order. Deter-
mine this initial range by entering from the keyboard an interrogation of
TER [CR]
The number of the current “TERMINATOR CHANNEL” will be displayed. We
will call this number “t
1
.”
c. Refer to the
Locate (LCT) column in Section 2 of your System 10 Data Sheet.
You should already be aware of the “location” of the real channel that uses the
source transducer you hooked up in Section 6, above. For example, if you
cabled your real-world transducer to the first subchannel of the conditioner
card in A Slot No. 3 or the first A-card deck, the corresponding real channel
would be the channel “located” at “1031.” Find the location value of your “live”
real channel in the
LCT column. Note the corresponding CHANNEL NUMBER
in the
Channel (CHN) column. We will call this number “x.”
d. Now enter a command of
TER = t
2
[CR]
where “t
2
” is a number different from “t
1
” and higher than “x.” This command
assigns Channel No. t
2
to be the new system Terminator Channel. On
powerup, the Central Processor’s effective scan range will always be from
Channel No. 1 to and including Channel No. t
2
.* As a general rule, you’ll want
to maximize your system’s scan speed by making the Terminator Channel
Number as low as possible.
9
SETTING SYSTEM TIME AND DATE
In this section, you’ll learn to apply the TIME (TME) and DATE (DTE) com-
mands.
a. Make sure the EEPROM Write Protect function is enabled.
b. Set your system’s internal clock-time by entering from the keyboard a
command of
TME = t [CR]
where “t” is a number of up to 6 digits expressing the current time in
hours, minutes, and seconds. For example, if it were now exactly 3:07
B - 19
“O
NTHE
A
IR
” (B-S
IZED
)
*Unless a SCAN (SCN) command has been used to specify a low scan limit other than Chan-
nel No. 1 and/or a high scan limit other than Channel No. t
2
(see Section 1.F.1 of the System 10
Guidebook). Note too that for a B-sized mainframe, you cannot set a Terminator Channel high-
er than “997”; the special TIME and DATE channels (Nos. 998 and 999) are always scanned.
SETTING SCAN RANGE SETTING TIME AND DATE
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