User manual

10
Pin
Description
1
VCC
2
ADC_IN (GT864-PY only)
3
HR_IN
4
TO_IN
5
DIG_OUT (GT864-PY only)
6
GND
Table 1: Pin Description
PIN
Signal
Direction
Limits
Description
1
VCC
Input
5 – 36V
Positive power input, DC
2
ADC_IN or
not connected
Input
0 – 36V
- Analogue Input in GT864 PY
- No connection in GT864 Quad version
3
HR_IN
Input
5 – 36V
Active high control line used to switch off
VIH > 5V, VIL < 0.5V
Power off: 1s < t < 2s
4
TO_IN
Input
5 – 36V
Positive edge triggered signal; used to switch
on the
modem
VIH > 5V, VIL < 0.5V
Power on: t > 1s
5
DIG_OUT / or not
connected
Output
5 – VCC
max. 36V
- Digital Output in GT864 PY
- No connection in GT864 Quad version
6
GND
Input
-
Negative power (ground) input and return
path for TO_IN and HR_IN
Table 2: RJ11 Pin and Signals Description
2.1.1 Analogue Input – GT864 PY Variant only
The following command has to be used to initialize and to read the status of the analogue
input:
AT#ADC=1,2,0 or AT#ADC=1,2
Response:
#ADC: <digital value> e.g. #ADC: 119
ADC_ IN ≈ 0,026V x digital value
ADC_IN [V]
5V
12V
24V
32V
digital value
192
461
923
1230
Table 3: Example for the Analogue Input