Keithley 2520, Руководство пользователя, Страница: 135 / 329

Model 2520 User’s Manual Digital I/O Port, Interlocks, and Pulse Sync Output 9-5
Remote digital output control
Use the :SOURce4:TTL <NRf> command to control the digital output line logic levels,
where <NRf> is the decimal value shown in
Table 9-1 . For example, send the following
command to set the output lines to L, H, L, H:
:SOUR4:TTL 5
Interlocks
The Model 2520 testhead is equipped with two interlock protection devices. The
REMOTE INTERLOCK connector is a DB-9 connector intended for such applications as
a remote interlock switch, while the KEY INTERLOCK connector is intended for connec-
tions for a security key switch.
NOTE
Both interlocks must be enabled for operation. Otherwise the source outputs will
not turn on.
See
Section 2 for detailed interlock connection information.
Table 9-1
Digital output line settings
OUT 4 OUT 3 OUT 2 OUT 1
Decimal
value
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
L = Low (Gnd)
H = High (>+3V)