Vaisala RVP900, Руководство пользователя

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you should install the corresponding jumper to connect that pin through to the PLD, or use a
wirewrap wire if the pin must go to a different PLD line. The "D" connector pin numbers are
printed next to each of the jumper locations. Because of the ordering of the pins in the
connector housing, jumpers 1 through 13 are interleaved with jumpers 14 through 25.
The uplink protocol, that the board should be expecting, is selected by jumpers H3 and H4
(see the following table). The first three table entries describe three fixed mappings of the
traditional AFC-16 uplink format on the pins of the 25-pin "D" connector. One of these
choices must be used when the DAFC is interfaced to an RVP900 system, whose uplink uses
the older style 16-bit AFC uplink format. In this case, you have to make most or all of the pin
assignments using wirewrap wire to connect each bit to its corresponding pin. This is
somewhat tedious, but hopefully one of the three formats is a reasonable starting point for
doing the wiring. The recommended solution is to use the Pinmap uplink protocol (available
since Rev.19), which allows for complete software mapping of all 25 external pins.
Table 23 DAFC Protocol Jumper Selections
H4 H3 Function
On On AFC-16 format, Bits<0:15> on Pins<1:16>, Fault input on Pin 25
On Off AFC-16 format, Bits<0:15> on Pins<25:10>, Fault input on Pin 3
Off On AFC-16 format, Bits<0:15> on Pins<18, 19, 6, 7, 21, 22, 23, 11, 10, 9,
20, 8, 12, 25, 13, 24>, Fault input on Pin 4
Off Off Pinmap format, software assignment of all pins
Ground, +5 V, and +24 V power supply pins on the "D" connector should be connected with
wirewrap wire to the nearby power and ground posts H6, H7, and H8. The PLD jumpers for
these power supply pins must not be installed. Two 3 K/6 K resistive terminators are also
available at H5 for pulling pins up to approxi3.3 V, when that is appropriate. Unused
"D" connector pins should remain both unwired and not jumpered.
Only install jumpers for pins that carry TTL inputs or outputs destined for
the on-board PLD. The jumpers must be removed for all power supply pins, and for
unused and reserved pins of the external device.
WARNING!
The DAFC board runs off of a 5 V power supply, which can be applied either from the
STALO through the "D" connector, or externally through the terminal block. There are also
provisions for sup24 V (approximately) between the terminal block and the "D"
connector, which is handy for cabling power to a STALO that requires the second voltage.
Two green LEDs indicate the presence of +5 V and +24 V. Terminal block Pin #1 is +5 V, Pin
#2 is +24 V, and Pin#3 is Ground. Pin #1 is the one nearest the corner of the board.
RVP900 User Guide M211322EN-J
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