Samsung SPH-A900 Service Manual page 27

- CDMA Test items
TEST ITEMS
1. PREPARANCE
2. FREQUENCY
ACCURACY
3. OCCUPIED CDMA
BANDWIDTH
4. LIMITATIONS ON
EMISSIONS
5. GATED POWER &
TIME
Set test equipments up.
[ 4 7 * 8 6 9 # 1 2 3 5 ] : Enter the Test Mode
"0 0 1" : Suspend
Confirm that the phone is in the "CDMA Mode".
(If not CDMA Mode, Use Test Command "022""2XXXX" and Push
the " " Key to "OK", and enter "0 0 2" to restart)
If you select a wrong key, press " # ", then enter new command.
To exit the Test Mode at any time, just press [0 0 2].
"0 0 1" : Suspend.
"0 1 3 0 3 6 3 * " : Set channel to 363.
"0 1 1" : Carrier On.
"0 1 9 X X X ' END[Push and Hold] ' " : Set AGC Code(XXX) level.
Measure the TX frequency : 835.89MHz±300Hz.
"0 0 1" : Suspend.
"0 1 3 0 3 6 3 * " : Set channel to 363.
"0 1 1" : Carrier On.
"0 1 4" : Spread spectrum.
"0 1 9 X X X ' END[Push and Hold] ' " : Enter AGC Code(XXX) to adjust
Measure the bandwidth (spec: 1.23MHz).
"0 0 1" : Suspend.
"0 1 3 0 3 6 3 * " : Set channel to 363.
"0 1 1" : Carrier On.
"0 1 4" : Spread spectrum.
"0 1 0 Select 1 *" :Set PA_R1 to High Gain Mode
"0 1 9 X X X ' END[Push and Hold] ' " : Enter AGC Code(XXX) to adjust
Measure the spurious at F
spec: F ±900kHz below 42dBc/30kHz
C
F ±1.98MHz below 54dBc/30kHz
C
Outside Receive Band 43+10log (PY)
PY: Mean Output Power in watts
Set the service option 2.
Set the data rate Eighth (1200bps).
Registering: HHP → HP8924C.
Call : HP8924C → HHP.
Measure the Gated Power & Time.
spec : Gated Power - at least 20dB
Gated Time - Rising Time : below 6 ㎲
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PROCEDURE
RF Output Power.
RF Output Power.
±900kHz, F ±1.98MHz, 2F
C C
Falling Time : below 6 ㎲
Burst Time : below 1.25 ㎳
6-7
Test Procedure
3F 1/2F .
C, C, C