Product Info
PTR for VHF-4000 and VDL-2000 Data Radios
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©2000 Rockwell Collins, Inc Page 23 of 61
Production Limit:
14.25 +/- 5.75 dB
1.2.2.1.1. SENSITIVITY 25 KHZ MODE CHANNEL 136.000 (BAND 18 LOW SIDE)
1)
Set the RF Generator frequency to 136.000 MHz.
2)
Set the ARINC control data to channel 136.000.
3)
Verify the S+N/N ratio at the combined audio output.
Production Limit:
14.25 +/- 5.75 dB
1.2.2.1.1. SENSITIVITY 25 KHZ MODE CHANNEL 136.975 (BAND 18 HIGH
SIDE)
1)
Set the RF Generator frequency to 136.975 MHz.
2)
Set the ARINC control data to channel 136.975.
3)
Verify the S+N/N ratio at the combined audio output.
Production Limit:
14.25 +/- 5.75 dB
1.2.2.1.1. SENSITIVITY 25 KHZ MODE CHANNEL 144.450 (VHF-4000 WITH
EXTENDED RANGE OPTION ONLY)
1)
Set the RF Generator frequency to 144.450 MHz.
2)
Set the ARINC control data to channel 144.450.
3)
Verify the S+N/N ratio at the combined audio output.
Production Limit:
14.25 +/- 5.75 dB
1.2.2.1.1. SENSITIVITY 25 KHZ MODE CHANNEL 151.000 (VHF-4000 ONLY,
BAND 33 LOW SIDE)
1)
Set the RF Generator frequency to 151.000 MHz.
2)
Set the ARINC control data to channel 151.000.
3)
Verify the S+N/N ratio at the combined audio output.
Production Limit:
14.25 +/- 5.75 dB
1.2.2.1.1. SENSITIVITY 25 KHZ MODE CHANNEL 151.975 (VHF-4000 ONLY,
BAND 33 HIGH SIDE)
1)
Set the RF Generator frequency to 151.975 MHz.
2)
Set the ARINC control data to channel 151.975.
3) Verify the S+N/N ratio at the combined audio output.
Production Limit:
14.25 +/- 5.75 dB