Led Indicators; Comm Status; Cpi Port; Specifications - Campbell GRANITE VOLT Series Product Manual

CPI is a proprietary protocol that supports GRANITE Measurement Modules. Two RJ45 ports
labeled CPI enable communications with a Campbell Scientific data logger and other GRANITE
Measurement Modules.

7.1.7 LED indicators

7.1.7.1 COMM status

When the VOLT 100 series has successfully been configured by a data logger, the COMM Status
LED will flash green. For scan rates 500 ms or slower, it will flash at the scan rate. For faster scan
rates, the LED will flash green every few scans. See

7.1.7.2 CPI port

When the VOLT 100 series has successfully been configured by a data logger, the green LED on
the CPI port will flash. For scan rates 500 ms or slower, it will flash at the scan rate. For faster scan
rates, the green LED will flash every few scans. A flashing orange LED indicates bus activity. A
solid orange LED indicates a bus error. See

8. Specifications

All VOLT 100 series units meet electrical specifications in a standard temperature range of –40 to
70 °C, non-condensing environment. XD units are tested over an extended temperature range of
–55 to 85 °C. Recommended calibration interval is every three years.

8.1 Voltage measurements

Voltage measurements use a 24-bit Analog-to-Digital (A-to-D) converter. One channel at a time
is measured in numeric succession. Differential and single-ended channels can be mixed.
Terminals
Differential configuration
VOLT 108:
VOLT 116:
Single-ended configuration
VOLT 108:
VOLT 116:
Range:
Table 12-2
Table 12-3
DIFF 1H/1L – 8H/8L
DIFF 1H/1L – 16H/16L
SE 1 – 16
SE 1 – 32
±5000, ±1000, ±250 mV. See
(p. 40).
(p. 40).
Table B-1 (p. 42)
VOLT 100 series 14