Micro-800/Micro-1000 Mode Of Operation; F.2 Micro-800/Micro-1000 M Ode Of O Peration - Geokon 8025 Instruction Manual

The figure below illustrates the DIP switch SW2 for switching between a GK-403 or Datalogger
application. "DATALOGGER"" is the default SW2 position:
GK-403
DATALOGGER
F.2 MICRO-800/MICRO-1000 Mode of Operation
The MICRO-800 and MICRO-1000 (which respectively utilize a CR800 and CR1000 controller,
manufactured by Campbell Scientific, Inc. of Logan, Utah) mode of operation uses two control
lines to operate the multiplexer. The RESET line enables the multiplexer and activates the
MICRO-800/MICRO-1000 mode of clocking. Pulses received on the CLOCK line sequentially
increment the channels while the RESET line is held high. See the timing diagram below.
The CLOCK line sequentially advances the channels beginning with channel 1. Note the timing
diagrams below for 16 and 32 channel switching, respectively.
T1
T2
T3
Reset
Clock Pulse 1
No Channel
Selected
Timing: T1 = 50 mSec(min.)
T2 = 2 mSsec(min)
T3 = 2 mSsec(min)
16 Channel MICRO-800/MICRO-1000 Channel Selection Timing
SW2
GK-403/DATALOGGER Selection
Pulse 2
Channel 1
Selected
Pulse 31 Pulse 32
Channel 16
Selected
29
No Channel
Selected