Sequoia / Tahoe Series User Manual California Instruments
M447352-01 REV-A 59
safety isolation SELV-rated.
NOTE: Not available with FC option and also not available with LKM and LKS option
NOTE: SYNC input is not supported in SINK-Electronic Load operating mode
Output Status
Monitors state of the output relay. Isolated TTL output. High if output relay is closed, low if
output relay is open
Remote Inhibit
Input
Signal input to turn the output on/off;
logic level, TTL-compatible; user-selectable as active-high or active-low;
Signal return common to signals, Trigger input, Synchronization Clock, and Remote Inhibit;
safety isolation SELV-rated.
Summary Fault
Output
Signal output indicating that a fault condition is present;
solid-state, normally-closed ac/dc switch;
logic level, active-low (open-circuit when the fault is not present);
switch ratings: 50V, maximum peak voltage; 0.1A, maximum current; 2.5Ω, maximum
resistance; 1µA, maximum off-state leakage current;
isolated from all other signals; safety isolation SELV-rated.
Table 3-17. External Input/Output Control Functions
Pin # Name Type Range Function
1 ISO_COM Return Return
Isolated signal return terminal for signals from Pin-2 to
Pin-15. / Common Ground
2 SYNC_HIGH
Digital
Input
0-5VDC
Isolated signal for synchronization of the output to a
logic-high signal transition; paired with Pin-3.
3 SYNC_LOW Return Return
Isolated signal return for synchronization of the output;
paired with Pin-2.
4 INHIBIT
Digital
Input
0-5VDC
Isolated inhibit signal to turn the output off/on and
open/close the output relay; signal return on Pin-1.
5 TRIGGER
Digital
Input
0-5VDC Isolated trigger signal; signal return on Pin-1.
6
SUMMARY
FAULT
Switch
Output
±12VDC
Isolated Summary Fault (DFI) signal; paired with Pin-7;
refer to Table 3-17
.
7
SUMMARY
FAULT RETURN
Return Return Signal return for Summary Fault; paired with Pin-6.
8 N/C N/C N/C N/C
9 N/C N/C N/C N/C
10 ISO_COM Return Return Common Ground
11
OUTPUT
STATUS
Digital
Output
0VDC or
5 VDC
Isolated TTL output; High if the output relay is closed,
low if the output relay is open
12
MODULATION
REFERENCE - A
Analog
Input
0-5V
(RMS)
External modulation signal input terminal for Phase-A.
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