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TEST  ADAPTER.  Continued - TM-11-5820-890-30-5_229
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TM-11-5820-890-30-5 Ground Non-Icom Radio Sets Consisting of: Receiver-Transmitter Radio RT-1439/VRC (NSN 5896-01-195-0827) Manual
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Section Il. REPAIR PARTS, SPECIAL  TOOLS,  TMDE, AND  SUPPORT  EQUIPMENT


TM 11-5820-890-30-5 3-7.  TEST  ADAPTER.  Continued Table  3-1.  Test  Adapter  Switches  Continued NAME (NUMBER) FUNCTION MOD  GEN  (S7) LOAD (S8) TEST EQPT INPUT (S9) CAL  (S12) PTT  (S13) STIM SEL (S14) RESP  SEL  (S15) When  ON,  this  switch  routes  the  function  generator’s  modulation generator  output  to  the  UUT. Sets  resistance  loads  on  the  test  equipment  measurement  inputs. The  loads  are: 1 620 ohms 2 510  ohms 3 220  ohms 4 150 ohms The  load  resistors  are  mounted  on  the  test  adapter  power  supply  CCA. Selects  between  testing  signals  from  external  probe  or  from  RESPONSE switch. Selects  to  send  either  the  function  generator  or  the  modulation generator  signal  to  the  frequency  counter  and  scope  2  for  calibration. Provides Push-To-Talk signal (GND) to UUT or REF RT. Selects  either  function  generator  or  handset  signals  to  be  sent  to STIMULUS  switch. Selects  deck  1  or  deck  2  of  RESPONSE  switch  for  source  of  test  signals. g.  Test signals.  The Points.  There  are  twelve  plugs  mounted  on  the test  point  signals  are: TEST  POINT TP1 TP2 TP3 TP4 TP5 TP6 TP7 TP8 TP9 TP10 TP11 TP12 front  panel.  They  provide  access  to  test  adapter SIGNAL  FROM Pin  F  of  UUT  connector. Pin  b  of  UUT  connector. Not   connected. Test  power  supply  input:  27.5  V  dc. Pin  V  of  UUT  connector. Test  power  supply  input:  27.5  V  dc. DC  switch  output:  27.5  V  dc  when  ON. Voltage  regulator  U3  output:  13  V  dc. 13V  switch  output:  13  V  dc  when  ON. Voltage  regulator  U1  output:  6.75  V  dc. Voltage  regulator  U2  output:  5  V  dc. Chassis  ground. 3-19


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