Datum Systems PSM-500L Spezifikationen PDF herunterladen (Seite 83)

PSM-500/500L/500LT SCPC Satellite Modem Operation

PSM-500/500L/500LT - Rev. 0.91

Page 3-23

Demodulator Parameter Detail

Representation

Type

Entry

Description

LNB Power

+18V

Selection 0 = Disabled

1 = +13VDC

2 = +18VDC

Selects Power and Voltage to

an LNB in the 500L or LT

LNB Current Out

221mA

Numeric Read Only Displays Current draw of LNB

LNB Current Max

300mA

Numeric 0 to 500 mA Sets the maximum LNB

current before an alarm.

LNB Current Min

150mA A

Numeric 0 to 500 mA Sets the minimum LNB

current before an alarm.

LNB 10 MHz Ref

Disabled

Selection 0 = Disabled

1 = Enable

Selects if modem’s current 10

MHz reference to be supplied

to an LNB in or L

LNB LO Frequency

5150.000000MHz

Numeric 0 to 49999.999996 MHz

Selects LNB LO frequency in

or L. If set non-zero then IF

frequency setting is at RF

frequency.

Alarm CXR Lock

To Alarm A

Selection 0=None, 1=A, 2=B, 3=A&B,

4 = Mute Mod CXR,

5 = Mute & Alarm A,

6 = Mute & Alarm B,

7 = Mute & Alarm A & B

Selects destination of alarm

Alarm Data

To Alarm A

Selection 0=None, 1=A, 2=B,

3=A & B

Selects destination of alarm

Alarm Low Eb/No

To Alarm A

Selection 0=None, 1=A, 2=B,

3=A & B

Selects destination of alarm

Alarm Low Level

To Alarm A

Selection 0=None, 1=A, 2=B,

3=A & B

Selects destination of alarm

Alarm Tst Active

To Alarm A

Selection 0=None, 1=A, 2=B,

3=A & B

Selects destination of alarm

Alarm Hardware

To Alarm A & B

Selection 0=None, 1=A, 2=B,

3=A & B

Selects destination of alarm

»Alarm Backward

To Alarm A & B

Selection 0=None, 1=A, 2=B,

3=A & B

Selects destination of alarm –

Only available with mux.

»Alarm LNB Power

To Alarm A & B

Selection 0=None, 1=A, 2=B,

3=A & B

Selects destination of alarm –

Only shown in /L.

Test IF Loopbck

Disabled

Selection 0 = Disable, 1 = Enable IF Loop-back control.

Test Symbol Rate

256.000ksps

Read Only N/A Receive Symbol Rate

Test Clock Error

251

Read Only N/A Bit Rate Clock error

Test AGC

-1.9V

Read Only N/A Internal Loop Voltage

1 2 ... 78 79 80 81 82 83 84 85 86 87 88 ... 123 124

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