Microwave Radio DS-2, Operator'S Manual

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Specifications
System Overview
1-4 IF Diversity Switch Operator’s Guide 400462-1 Rev. A
1.9 Specifications
1.9.1 Electrical
Range of AGC input (DAR/FLH)...... 0.0 to –5.0 V 10 ua
Range of AGC input (TwinStream).. 0.0 to +5.0 V 10 ua
Power Supply ........................–20 to –32 VDC (125 ma)
–38 to –52 VDC (125 ma)
Input Range J1, J2 ...... 70 MHz –5 to +5 DBM 50 ohms
Isolation ............................... 60 dB minimum at 70 MHz
Gain ............................................................... 0 +/– 2 dB
Return Loss ..........................................................26 DB
Switching time ....................... less than 3 microseconds
Interface................................ 25 pin D connector (male)
BNC jack for IF connection
PROM (FLH/DAR) .......................................DS2V4.MIK
PROM (TwinStream) .................................DS2V4T.MIK
1.9.2 Pin Assignments (P1)
Table 2-2 Pin Assignments - Connector P1
Note:
Connections to P1 should be with shielded twisted pairs in areas with
high levels of RFI such as TV stations, FM broadcasting stations or
radar.
1.9.3 Mechanical
Size................................................. 19" w 8.5" d 1.75" h
Figure 2-3 DS2 Diversity Switch Rear Panel
Pin Description
1 Chassis ground, Power com (+)
2 –V in #1 (either –24 V or –48 V depending on model)
3 –V in #2
4 AGC1 input Receiver “A”
5 AGC2 input Receiver “B”
6 AGC Common (+)
7 Remote Select “A” (requires closure to pin 9)
8 Remote Select “B”
9 Remote Common (GND)
10 Receive “A” Status (NO) (10 VA max., 100 v/.1 amp)
11 Receive “B” Status (NO)
12 Manual Mode Status (NC)
13 Status Common
14–25 No connection
P1
AC or DC POWER RECEPTACLE