background image

1.2  Technical Characteristics

TABLE 1.1   1200-05 IF Processor Specifications

*

RX Input Characteristics
  

Impedance/Return Loss

50

Ω

 /18 dB

Frequency   

50 to 90 MHz

Level Range

-15 to -95 dBm

1 dB compression

-10 dBm

RX Output Characteristics
  

Output Impedance/RL

 50

Ω

, 75

Ω

/18 dB

Monitor/AGC Out Level

-30 dBm, +5, -15 dB 

 

Level Range, Nominal

-30 to -50 dBm

RX Channel Characteristics
  

Gain, AGC

-25 to +45 dB range

AGC Response time, typ.

6 sec. 10 dB step

Gain Adjustment

0 to -20 dB 

Frequency Response

±1.0 dB

TX Input Characteristics
  

Impedance/Return Loss  

50

Ω

, 75

Ω

 /18 dB

Frequency

50 to 90 MHz

Level Range

-20 to +5 dBm 

TX Output Characteristics
  

Impedance/Return Loss

50

Ω

, /18 dB

Level Range

+5 to -20 dBm

1 dB compression

+10 dBm

TX Channel Characteristics

Gain Adjustment

0 to -30 dB

  

Frequency Response

±1.0 dB

Group Delay, max.

+5 ns, max.

TX Switch Characteristics

Isolation, Switch off

 60 dB

  

Isolation, Port to Port

 50 dB, all “ON” 

Switch Time

 10 milliseconds

SAW filter prior to AGC detection circuitry typical characteristics 

1 dB Bandege (typ.)

69.9 MHz lower; 70.09 MHz upper

40 dB Bandege (typ.)

69.56 MHz lower; 70.46 MHz upper

Controls, Indicators

DIG1TX, FDMTX, DIG2TX

Green LEDs and SPDT switches

  

LOCAL/REMOTE

Red LED and SPDT switches 

  

OVERRIDE

Yellow LED 

  

POWER

Green LED indicates power is supplied to the unit 

Other 

IF Connectors

TNC (female)

Connector, DC, Control

DB9 (female)

Size

19.0” 1RU chassis x 14.0” deep

Power 

100-240 ±10% VAC, 47 - 63 Hz, 30 watts max.

 

  

*+10 to +40 degrees C; Specifications subject to change without notice.

1200-05 Manual, Rev. 0 

 

Page 4

    

                 10/14/10

Summary of Contents for 1200-05

Page 1: ...proprietary to Cross Technologies Inc but may be reproduced or duplicated without the prior permission of Cross Technologies Inc for purposes of operating the equipment When ordering parts from Cross...

Page 2: ...oss Technologies Inc s obligation under this warranty is limited to repairing or at Cross Technologies Inc s option replacing parts subassemblies or entire assemblies Cross Technologies Inc shall not...

Page 3: ...DT switch on the front panel selects either REMOTE or LOCAL operation A local override feature is included such that when the REMOTE LOCAL switch is left in the LOCAL position the override pin on the...

Page 4: ...5 to 20 dBm 1 dB compression 10 dBm TX Channel Characteristics Gain Adjustment 0 to 30 dB Frequency Response 1 0 dB Group Delay max 5 ns max TX Switch Characteristics Isolation Switch off 60 dB Isola...

Page 5: ...14 inch deep chassis An AC power supply provides 15 VDC and 15 VDC to the PCB The 1200 05 can be secured to a rack using the 4 holes on the front panel Figure 2 1 shows how the 1200 05 is assembled PO...

Page 6: ...de Input 15 VDC V overrides LOCAL control and allows for REMOTE control 7 AGC OUT AGC Voltage Indicates current AGC gain see Table 2 2 8 V DC Voltage Reference 15 VDC 2 3 Front Panel Controls and Indi...

Page 7: ...TX IF OUT J104 Figure 2 2 and that the appropriate LED s DS1 DS3 Figure 2 3 is lit 7 Adjust attenuator pots R1 R2 R3 T1 T2 T3 as needed Clockwise rotation provides increased output level full clockwi...

Page 8: ...J105 can be monitored to determine the approximate input level and corresponding gain in AGC as Table 2 2 shows TABLE 2 2 Approximate AGC Vo oltage AGC Voltage vs Gain and Input Le evel Input Level AG...

Page 9: ...erloading Consideration should be given to the connection of the equipment to the supply circuit and the effect that overloading of circuits could have on over current protection and supply wiring App...

Page 10: ...S INC 6170 Shiloh Road Alpharetta Georgia 30005 770 886 8005 FAX 770 886 7964 Toll Free 888 900 5588 WEB www crosstechnologies com E MAIL info crosstechnologies com Printed in USA 1200 05 Manual Rev 0...

Reviews: