Update receive-real-time-telemetry.md

Author: 777arc

articles/orbital/receive-real-time-telemetry.md

@@ -68,7 +68,7 @@ Follow the [instructions to enable Capture](../../articles/event-hubs/event-hubs
 
 ## Understand telemetry points
 
-### Current telemetry schema version: 4.0
+### Current telemetry schema version: 4.1
 The ground station provides telemetry using Avro as a schema. The schema is below:
 
 ```json
@@ -130,11 +130,11 @@ The ground station provides telemetry using Avro as a schema. The schema is belo
     },
     {
       "name": "contactTleLine1",
-      "type": "string"
+      "type": [ "null", "string" ]
     },
     {
       "name": "contactTleLine2",
-      "type": "string"
+      "type": [ "null", "string" ]
     },
     {
       "name": "links",
@@ -285,7 +285,7 @@ The following table provides the source device/point, possible values, and defin
 | digitizerName | Digitizer | | Name of digitizer device |
 | endpointName | Contact profile link channel	| |	Name of the endpoint used for the contact. |
 | inputEbN0InDb |	Modem: measuredEbN0	| • NULL (Modem model other than QRadio or QRx) <br> • Double: Input EbN0 | Input energy per bit to noise power spectral density in dB. |
-| inputEsN0InDb	| Not used in Microsoft antenna telemetry | NULL (Not used in Microsoft antenna telemetry) | Input energy per symbol to noise power spectral density in dB. |
+| inputEsN0InDb	| Modem: measuredEsN0 | • NULL (Modem model other than QRx) <br> • Double: Input EsN0 | Input energy per symbol to noise power spectral density in dB. |
 | inputRfPowerDbm |	Digitizer: inputRfPower	| • NULL (Uplink or Digitizer driver other than SNNB or SNWB) <br> • Double: Input Rf Power | Input RF power in dBm. |
 | outputRfPowerDbm | Digitizer: outputRfPower | • NULL (Downlink or Digitizer driver other than SNNB or SNWB) <br> • Double: Output Rf Power | Ouput RF power in dBm. |
 | outputPacketRate | Digitizer: rfOutputStream[0].measuredPacketRate | • NULL (Downlink or Digitizer driver other than SNNB or SNWB) <br> • Double: Output Packet Rate | Measured packet rate for Uplink |