Product Info

PTR for VHF-4000 and VDL-2000 Data Radios
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©2000 Rockwell Collins, Inc Page 40 of 61
2) Ground SIMULCOM_CNTL_2_SEL pin (Pin 46 VHF-4000, Pin 34 VDL-2000)
3) Verify Bit 23 in Label 060 ARINC 429 output word changes to logic 1.
4) Remove ground from SIMULCOM_CNTL_2_SEL pin.
7.3.10 SYSTEM_ON_F (VDL-2000 only)
1) Open SYSTEM_ON_F (pin 27).
2) Verify input current on +28VDC primary power is less than 500 mA.
7.4 ARINC 429 I/O TESTS (VHF4000 ONLY!)
7.4.1 VHF ARINC 429 Low Speed Output Port 1
7.4.1.1 VHF ARINC 429 LOW SPEED OUTPUT 1A RISE TIME
1) Verify the rise time (10 - 90%) of a “HI” on the VHF ARINC 429 Low Speed Output 1A (Pin 5 VHF-
4000).
Limit: = 10.0 +/- 5.0 uS
1.1.6.1 VIR ARINC 429 LOW SPEED OUTPUT 1A FALL TIME
1) Verify the fall time (90 - 10%) of a “HI” on the VIR ARINC 429 Low Speed Output 1A (Pin 5 VHF-
4000).
Limit: = 10.0 +/- 5.0 uS
1.1.6.2 VHF ARINC 429 LOW SPEED OUTPUT 1A HI LEVEL
1) Verify the dc voltage (ref to gnd) of a “HI” on the VHF ARINC 429 Low Speed Output 1A (Pin 5
VHF-4000).
Limit: = 5.25 +/- 0.75 VDC
1.1.6.3 VIR ARINC 429 LOW SPEED OUTPUT 1A LO LEVEL
1) Verify the dc voltage (ref to gnd) of a “LO” on the VIR ARINC 429 Low Speed Output 1A (Pin 5
VHF-4000).
Limit: = -5.25 +/- 0.75 VDC
1.1.6.4 VHF ARINC 429 LOW SPEED OUTPUT 1B RISE TIME
1) Verify the rise time (10 - 90%) of a “LO” on the VHF ARINC 429 Low Speed Output 1B (PIN 5
VHF-4000).
Limit: = 10.0 +/- 5.0 uS
1.1.6.5 VHF ARINC 429 LOW SPEED OUTPUT 1B FALL TIME
1) Verify the fall time (90 - 10%) of a “LO” on the VHF ARINC 429 Low Speed Output 1B (PIN 5 VHF-
4000).
Limit: = 10.0 +/- 5.0 uS
1.1.6.6 VHF ARINC 429 LOW SPEED OUTPUT 1B HI LEVEL
1) Verify the dc voltage (ref to gnd) of a “HI” on the VHF ARINC 429 Low Speed Output 1B (PIN 5
VHF-4000).