Troubleshooting; Specifications; General; Relays - Geokon 8025 Instruction Manual

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F.5 TROUBLESHOOTING
Below are some commonly experienced problems along with possible remedial action. Contact
the factory if any problem remains unresolved or additional help is required.
A particular channel on the multiplexer appears to be malfunctioning.

Check sensor connections on the terminal board. Clean if corrosion exists.

Try moving the sensor wired to the suspect channel to another channel to verify the
malfunctioning of the channel (as opposed to the sensor).
No channels are working.

Inspect circuit board for shorts, opens, or other damage.

Is moisture present on circuit board? If so, install desiccant to absorb.
Channel selection appears to be random.

Has corrosion built up on the circuit board? Clean if necessary.

Is there a source of electrical noise nearby? Move multiplexer or noise source if possible.
F.6 SPECIFICATIONS
F.6.1 General
Power Requirements: 10-16 VDC (unregulated)
Quiescent Current (MICRO-800/MICRO-1000 mode): 80 A (16CH mode)
Quiescent Current (GK-403 mode): 12 mA
Channel Activated Current: 30 mA
Control Line Input Impedance: 100 k (CLOCK), 100 k (RESET)
Control Line Input Levels: TTL or RS-232 (9 VDC)
Transient Protection: 16 VDC Transzorbs
Operating Temperature: 40 to 60 C
F.6.2 Relays
Type: NAIS TXS2SA-4.5V DPDT non-latching
Power: 11.1 mA @ 5VDC (55.5 mW)
Contact Type: Gold clad silver alloy
On Resistance: 100 m
Coil Resistance: 405 
Maximum Switching Power: 30W (resistive)
Maximum Switching Voltage: 110 VDC
Maximum Switching Current: 1 A
130A (32CH mode)