Vaisala RVP900 - RVP901 Miscellaneous Discrete and Analog I;O Connectors; Table 16 Discrete and Analog I;O; Table 17 RVP901 51-Pin Micro-D Summary

4.2.4 RVP901 Miscellaneous Discrete and Analog I/O
Connectors
Table 16 Discrete and Analog I/O
Function Description
Misc • 2 identical 51-pin MicroD connectors to support miscellaneous I/O
• Includes D/A, A/D, discrete inputs and outputs (TTL, RS-485/422, and so
on.). See the following table.
• I/O pin assignment mapping
• ESD protection using low capacitance TVS diode. Series resistors are added
to the TTL pins to provide over voltage protection.
TTL I/O • 20 dedicated 5 V TTL lines
• Drive capability of ± 32 mA
• Over voltage, ESD, ETF, and lightening protection
RS-485/422 IO • 20 pairs with optional 120Ω termination
• Maximum data rate of 20 Mbps
• Over voltage, ESD, ETF, and lightening protection
Analog Inputs • 6 analog dierential inputs
• ± 10 V DC or low frequency signals
• Settle to within 0.1% of full scale value in 800 nanoseconds
• ADC conversion rate once every 0.5 μsec
Analog Outputs • +5 V 400 mA total combined maximum current
• -5 V 150 mA combined maximum current
Table 17 RVP901 51-pin Micro-D Summary
Pin # Signal Type Signal Name on J6 Signal Name on J3
1, 19 RS-485/422
GPDIFF_PIN_LP/N[10]
2, 20 RS-485/422
GPDIFF_PIN_LP/N[11]
3, 21 RS-485/422
GPDIFF_PIN_LP/N[12]
4, 22 RS-485/422
GPDIFF_PIN_LP/N[13]
5, 23 RS-485/422
GPDIFF_PIN_LP/N[14]
6, 24 RS--485/422
GPDIFF_PIN_LP/N[15]
7, 25 RS-485/422
GPDIFF_PIN_LP/N[16]
8, 26 RS-485/422
GPDIFF_PIN_LP/N[17]
9, 27 RS-485/422
GPDIFF_PIN_LP/N[18]
10, 28 RS-485/422
GPDIFF_PIN_LP/N[19]
11 TTL
TTLIO_PIN[10] TTLIO_PIN[0]
12 TTL
TTLIO_PIN[11] TTLIO_PIN[1]
13 TTL
TTLIO_PIN[12] TTLIO_PIN[2]
RVP900 User Guide M211322EN-J
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