TM 11-5820-890-30-5 3-17. OPERATIONAL CHECK. Continued Step 1. SELF-TEST, RECEIVE, AND TRANSMIT CHECK. Continued Action w. x. y. z. Set  UUT  RT:  RF:  PA. Read  DMM. Set  RESP  SEL:  S1. Set  RESPONSE:  1. Set TEST EQPT SELECTOR: HANDSET. Press  handset  PTT  switch  and  check  for sidetone. Set  LOGIC:  1. Press  handset  PTT  switch  and  check  for sidetone. Set  LOGIC:  OFF. Read SIG display. aa.  Set  PTT:  OFF. Step 2. TRANSMIT/RECEIVE SC AUDIO CHECK. Action a.   Set Set Set Set (All CAL:  FCTN  GEN LEVEL:  140  mV  p-p (130  to  150  mV  p-p) FREQ:  1000  Hz (900 to 1100 Hz) FUNCTION:   SINE, CAL:   OFF. RESPONSE : 3 LOAD: 1 RF  SWITCH:  3. TEST  EQPT  SELECTOR:  SCOPE STIM SEL: FCTN  GEN. REF RT and UUT RT: test  frequencies  loaded) FCTN: SQ  ON RF: LO CHAN: 1 VOL: FULLY  CW MODE  : SC DATA : OFF. Response w. x. y. z. DMM  reads  6.25  to  7.25  V  dc.  If  not, go  to  chart  3. Sidetone positions Sidetone is  present.  If  not,  check  switch on  test  adapter. is  not  present.  If present,  go  to  chart  3. SIG  display  segments  8  or If  not,  go  to  chart  3. aa.  No  response. sidetone 9  are  lit. Response a. Scope  CHAN  B  and  frequency  counter will  display  function  generator  calibration. 3-31